James Hamilton Mclean: the Master of the Gastropoda
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Geometric Morphometric Analysis Reveals That the Shells of Male and Female Siphon Whelks Penion Chathamensis Are the Same Size and Shape Felix Vaux A, James S
MOLLUSCAN RESEARCH, 2017 http://dx.doi.org/10.1080/13235818.2017.1279474 Geometric morphometric analysis reveals that the shells of male and female siphon whelks Penion chathamensis are the same size and shape Felix Vaux a, James S. Cramptonb,c, Bruce A. Marshalld, Steven A. Trewicka and Mary Morgan-Richardsa aEcology Group, Institute of Agriculture and Environment, Massey University, Palmerston North, New Zealand; bGNS Science, Lower Hutt, New Zealand; cSchool of Geography, Environment & Earth Sciences, Victoria University, Wellington, New Zealand; dMuseum of New Zealand Te Papa Tongarewa, Wellington, New Zealand ABSTRACT ARTICLE HISTORY Secondary sexual dimorphism can make the discrimination of intra and interspecific variation Received 11 July 2016 difficult, causing the identification of evolutionary lineages and classification of species to be Final version received challenging, particularly in palaeontology. Yet sexual dimorphism is an understudied research 14 December 2016 topic in dioecious marine snails. We use landmark-based geometric morphometric analysis to KEYWORDS investigate whether there is sexual dimorphism in the shell morphology of the siphon whelk Buccinulidae; conchology; Penion chathamensis. In contrast to studies of other snails, results strongly indicate that there fossil; geometric is no difference in the shape or size of shells between the sexes. A comparison of morphometrics; mating; P. chathamensis and a related species demonstrates that this result is unlikely to reflect a paleontology; reproduction; limitation of the method. The possibility that sexual dimorphism is not exhibited by at least secondary sexual some species of Penion is advantageous from a palaeontological perspective as there is a dimorphism; snail; true whelk rich fossil record for the genus across the Southern Hemisphere. -
Auckland Shell Club Auction Lot List - 22 October 2016 Albany Hall
Auckland Shell Club Auction Lot List - 22 October 2016 Albany Hall. Setup from 9am. Viewing from 10am. Auction starts at 12am Lot Type Reserve 1 WW Helmet medium size ex Philippines (John Hood Alexander) 2 WW Helmet medium size ex Philippines (John Hood Alexander) 3 WW Helmet really large ex Philippines, JHA 4 WW Tridacna (small) embedded in coral ex Tonga 1963 5 WW Lambis truncata sebae ex Tonga 1979 6 WW Charonia tritonis - whopper 45cm. No operc. Tongatapu 1979 7 WW Cowries - tray of 70 lots 8 WW All sorts but lots of Solemyidae 9 WW Bivalves 25 priced lots 10 WW Mixed - 50 lots 11 WW Cowries tray of 119 lots - some duplication but includes some scarcer inc. draconis from the Galapagos, scurra from Somalia, chinensis from the Solomons 12 WW Univalves tray of 50 13 WW Univalves tray of 57 with nice Fasciolaridae 14 WW Murex - (8) Chicoreus palmarosae, Pternotus bednallii, P. Acanthopterus, Ceratostoma falliarum, Siratus superbus, Naquetia annandalei, Murex nutalli and Hamalocantha zamboi 15 WW Bivalves - tray of 50 16 WW Bivalves - tray of 50 17 Book The New Zealand Sea Shore by Morton and Miller - fair condition 18 Book Australian Shells by Wilson and Gillett excellent condition apart from some fading on slipcase 19 Book Shells of the Western Pacific in Colour by Kira (Vol.1) and Habe (Vol 2) - good condition 20 Book 3 on Pectens, Spondylus and Bivalves - 2 ex Conchology Section 21 WW Haliotis vafescous - California 22 WW Haliotis cracherodi & laevigata - California & Aus 23 WW Amustum bellotia & pleuronecles - Queensland 24 WW Haliotis -
The Recent Molluscan Marine Fauna of the Islas Galápagos
THE FESTIVUS ISSN 0738-9388 A publication of the San Diego Shell Club Volume XXIX December 4, 1997 Supplement The Recent Molluscan Marine Fauna of the Islas Galapagos Kirstie L. Kaiser Vol. XXIX: Supplement THE FESTIVUS Page i THE RECENT MOLLUSCAN MARINE FAUNA OF THE ISLAS GALApAGOS KIRSTIE L. KAISER Museum Associate, Los Angeles County Museum of Natural History, Los Angeles, California 90007, USA 4 December 1997 SiL jo Cover: Adapted from a painting by John Chancellor - H.M.S. Beagle in the Galapagos. “This reproduction is gifi from a Fine Art Limited Edition published by Alexander Gallery Publications Limited, Bristol, England.” Anon, QU Lf a - ‘S” / ^ ^ 1 Vol. XXIX Supplement THE FESTIVUS Page iii TABLE OF CONTENTS INTRODUCTION 1 MATERIALS AND METHODS 1 DISCUSSION 2 RESULTS 2 Table 1: Deep-Water Species 3 Table 2: Additions to the verified species list of Finet (1994b) 4 Table 3: Species listed as endemic by Finet (1994b) which are no longer restricted to the Galapagos .... 6 Table 4: Summary of annotated checklist of Galapagan mollusks 6 ACKNOWLEDGMENTS 6 LITERATURE CITED 7 APPENDIX 1: ANNOTATED CHECKLIST OF GALAPAGAN MOLLUSKS 17 APPENDIX 2: REJECTED SPECIES 47 INDEX TO TAXA 57 Vol. XXIX: Supplement THE FESTIVUS Page 1 THE RECENT MOLLUSCAN MARINE EAUNA OE THE ISLAS GALAPAGOS KIRSTIE L. KAISER' Museum Associate, Los Angeles County Museum of Natural History, Los Angeles, California 90007, USA Introduction marine mollusks (Appendix 2). The first list includes The marine mollusks of the Galapagos are of additional earlier citations, recent reported citings, interest to those who study eastern Pacific mollusks, taxonomic changes and confirmations of 31 species particularly because the Archipelago is far enough from previously listed as doubtful. -
WMSDB - Worldwide Mollusc Species Data Base
WMSDB - Worldwide Mollusc Species Data Base Family: TURBINIDAE Author: Claudio Galli - [email protected] (updated 07/set/2015) Class: GASTROPODA --- Clade: VETIGASTROPODA-TROCHOIDEA ------ Family: TURBINIDAE Rafinesque, 1815 (Sea) - Alphabetic order - when first name is in bold the species has images Taxa=681, Genus=26, Subgenus=17, Species=203, Subspecies=23, Synonyms=411, Images=168 abyssorum , Bolma henica abyssorum M.M. Schepman, 1908 aculeata , Guildfordia aculeata S. Kosuge, 1979 aculeatus , Turbo aculeatus T. Allan, 1818 - syn of: Epitonium muricatum (A. Risso, 1826) acutangulus, Turbo acutangulus C. Linnaeus, 1758 acutus , Turbo acutus E. Donovan, 1804 - syn of: Turbonilla acuta (E. Donovan, 1804) aegyptius , Turbo aegyptius J.F. Gmelin, 1791 - syn of: Rubritrochus declivis (P. Forsskål in C. Niebuhr, 1775) aereus , Turbo aereus J. Adams, 1797 - syn of: Rissoa parva (E.M. Da Costa, 1778) aethiops , Turbo aethiops J.F. Gmelin, 1791 - syn of: Diloma aethiops (J.F. Gmelin, 1791) agonistes , Turbo agonistes W.H. Dall & W.H. Ochsner, 1928 - syn of: Turbo scitulus (W.H. Dall, 1919) albidus , Turbo albidus F. Kanmacher, 1798 - syn of: Graphis albida (F. Kanmacher, 1798) albocinctus , Turbo albocinctus J.H.F. Link, 1807 - syn of: Littorina saxatilis (A.G. Olivi, 1792) albofasciatus , Turbo albofasciatus L. Bozzetti, 1994 albofasciatus , Marmarostoma albofasciatus L. Bozzetti, 1994 - syn of: Turbo albofasciatus L. Bozzetti, 1994 albulus , Turbo albulus O. Fabricius, 1780 - syn of: Menestho albula (O. Fabricius, 1780) albus , Turbo albus J. Adams, 1797 - syn of: Rissoa parva (E.M. Da Costa, 1778) albus, Turbo albus T. Pennant, 1777 amabilis , Turbo amabilis H. Ozaki, 1954 - syn of: Bolma guttata (A. Adams, 1863) americanum , Lithopoma americanum (J.F. -
Phylum MOLLUSCA Chitons, Bivalves, Sea Snails, Sea Slugs, Octopus, Squid, Tusk Shell
Phylum MOLLUSCA Chitons, bivalves, sea snails, sea slugs, octopus, squid, tusk shell Bruce Marshall, Steve O’Shea with additional input for squid from Neil Bagley, Peter McMillan, Reyn Naylor, Darren Stevens, Di Tracey Phylum Aplacophora In New Zealand, these are worm-like molluscs found in sandy mud. There is no shell. The tiny MOLLUSCA solenogasters have bristle-like spicules over Chitons, bivalves, sea snails, sea almost the whole body, a groove on the underside of the body, and no gills. The more worm-like slugs, octopus, squid, tusk shells caudofoveates have a groove and fewer spicules but have gills. There are 10 species, 8 undescribed. The mollusca is the second most speciose animal Bivalvia phylum in the sea after Arthropoda. The phylum Clams, mussels, oysters, scallops, etc. The shell is name is taken from the Latin (molluscus, soft), in two halves (valves) connected by a ligament and referring to the soft bodies of these creatures, but hinge and anterior and posterior adductor muscles. most species have some kind of protective shell Gills are well-developed and there is no radula. and hence are called shellfish. Some, like sea There are 680 species, 231 undescribed. slugs, have no shell at all. Most molluscs also have a strap-like ribbon of minute teeth — the Scaphopoda radula — inside the mouth, but this characteristic Tusk shells. The body and head are reduced but Molluscan feature is lacking in clams (bivalves) and there is a foot that is used for burrowing in soft some deep-sea finned octopuses. A significant part sediments. The shell is open at both ends, with of the body is muscular, like the adductor muscles the narrow tip just above the sediment surface for and foot of clams and scallops, the head-foot of respiration. -
Club Conchylia Mitteilungen Heft 24, Juni 2015 Titelblatt Impressum
Club Conchylia Mitteilungen Heft 24, Juni 2015 Titelblatt Impressum Verantwortlich i.S.d.P.: Dr. MANFRED HERRMANN, Rosdorf und die Redaktion Herausgegeben vom Club Conchylia e.V., Öhringen, Deutschland Vorstand des Club Conchylia: 1. Vorsitzender 2. Vorsitzender Schatzmeister Dr. MANFRED HERRMANN, Ulmenstrasse 14 ROLAND GÜNTHER, Blücherstrasse 15 STEFFEN FRANKE, Geistenstraße 24 D-37124 Rosdorf D-40477 Düsseldorf D-40476 Düsseldorf Tel.: 0049-(0)551-72055; Fax. -72099 Tel.: 0049-(0)211-6007827 Tel 0049-(0)211 - 514 20 81 E-Mail: [email protected] E-Mail: [email protected] E-Mail: [email protected] Regionale Vorstände: Norddeutschland: Westdeutschland: Süddeutschland: Dr. VOLLRATH WIESE, Hinter dem Kloster 42 HUBERT HENKEL, Elly-Heuss-Knapp-Weg 35 INGO KURTZ, Prof.-Kneib-Str. 10 D-23743 Cismar D-50374 Erftstadt-Lechenich D-55270 Zornheim Tel. / Fax: 0049-(0 )4366-1288 Tel. 0049-(0)2235-680238 Tel.: 0049-(0)6136-758750 E-Mail: [email protected] E-Mail: [email protected] E-Mail: [email protected] Ostdeutschland: Schweiz: ANDREA POHL, Grüner Weg 30 PEER SCHEPANSKI, Am Grünen Hang 23 FRANZ GIOVANOLI, Gstaadmattstr. 13 D-01109 Dresden D-09577 Niederwiesa CH-4452 Itingen Tel.: 0049 (0)351-889 37 77 Tel.: 0049 (0)1577-517 44 03 Tel.: 0041- 61- 971 15 48 E-Mail: [email protected] E-Mail: [email protected] E-Mail: [email protected] Redaktion Conchylia + Acta Conchyliorum: Redaktion Club Conchylia Mitteilungen: KLAUS GROH ROLAND HOFFMANN Hinterbergstr. 15 Eichkoppelweg 14a D-67098 Bad Dürkheim D-24119 Kronshagen Tel.: 0049-(0)6322-988 70 68 Tel.: 0049-(0)431-583 68 81 E-Mail: [email protected] E-Mail: [email protected] Bank-Konto des Club Conchylia e.V.: Volksbank Mitte eG, Konto Nr. -
Otago Submarine Canyons: Mapping and Macrobenthos
Otago Submarine Canyons: Mapping and Macrobenthos Bryce A. Peebles A thesis submitted in partial fulfilment for the degree of Master of Science at the University of Otago December 2013 ii Abstract Submarine canyons are steep-sided “V’ or “U” shaped valleys that incise continental slopes worldwide. The geophysical and oceanographic features of submarine canyons can produce environmental conditions that cause benthic assemblages to be distinctive and productive compared to those of the adjacent slope; however the assemblages are potentially vulnerable to anthropogenic impacts, including bottom fishing. In order to help inform policy and management, submarine canyons need to be objectively defined topographically and their benthic assemblages characterised. A canyon network occurs off the Otago Peninsula, south-eastern New Zealand, but lack of detailed bathymetric data and adequate benthic sampling has limited study of the canyons. This thesis outlines a method of defining submarine canyon areas and examines epifaunal and infaunal assemblages of the Otago canyons and adjacent slope. Objective definition of the Otago canyon network in the GIS software GRASS along with the steps to use this methodology worldwide are described. Archival count data from 1966-74 on the epifauna are analysed using the PRIMER suite of programs to characterise epifaunal assemblages. Anomurans, polychaetes, asteroids and ascidians make up 70% of the epifaunal canyon assemblage. The epifaunal assemblage is clearly defined by water depth and recognisable from 380 m. Quantitative sampling of infauna in Saunders canyon, Papanui canyon and adjacent slope was carried out to examine infaunal community structure of the canyons and adjacent slope. Infaunal canyon assemblages are dominated by polychaetes, amphipods, ophiuroids, decapods and isopods in canyons, accounting for 75% of collected individuals. -
Critical Review of Type Specimens Deposited in the Malacological Collection of the Biological Institute/Ufrj, Rio De Janeiro, Brazil
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/324805927 Critical review of type specimens deposited in the Malacological Collection of the Biological institute/ufrj, Rio de Janeiro, Brazil Article in Zootaxa · April 2018 DOI: 10.11646/zootaxa.4415.1.4 CITATIONS READS 0 35 4 authors, including: Cleo Oliveira Ricardo Silva Absalão Federal University of Rio de Janeiro Federal University of Rio de Janeiro 16 PUBLICATIONS 64 CITATIONS 92 PUBLICATIONS 486 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: Morfoanatomia de Gastrópodes (Mollusca) Terrestres em Floresta Ombrófila Densa Montana do Parque Nacional da Serra dos Órgãos, Rio de Janeiro View project All content following this page was uploaded by Cleo Oliveira on 24 May 2018. The user has requested enhancement of the downloaded file. Zootaxa 4415 (1): 091–117 ISSN 1175-5326 (print edition) http://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2018 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4415.1.4 http://zoobank.org/urn:lsid:zoobank.org:pub:D2AC7BE4-87D2-462C-91CA-F5F877FF595A Critical review of type specimens deposited in the Malacological collection of the biological institute/Ufrj, Rio de Janeiro, Brazil CLÉO DILNEI DE CASTRO OLIVEIRA1,3, ALEXANDRE DIAS PIMENTA2, RAQUEL MEDEIROS ANDRADE FIGUEIRA1 & RICARDO SILVA ABSALÃO1 1Laboratório de Malacologia, Instituto de Biologia/UFRJ, Rio de Janeiro, Brazil. 2Departamento de Invertebrados, Museu Nacional/UFRJ, Rio de Janeiro, Brazil 3Corresponding author. E-mail: [email protected] Abstract The Malacological Collection of the Biological Institute of Federal University of Rio de Janeiro figures as an important repository of specimens, containing c.a. -
(Approx) Mixed Micro Shells (22G Bags) Philippines € 10,00 £8,64 $11,69 Each 22G Bag Provides Hours of Fun; Some Interesting Foraminifera Also Included
Special Price £ US$ Family Genus, species Country Quality Size Remarks w/o Photo Date added Category characteristic (€) (approx) (approx) Mixed micro shells (22g bags) Philippines € 10,00 £8,64 $11,69 Each 22g bag provides hours of fun; some interesting Foraminifera also included. 17/06/21 Mixed micro shells Ischnochitonidae Callistochiton pulchrior Panama F+++ 89mm € 1,80 £1,55 $2,10 21/12/16 Polyplacophora Ischnochitonidae Chaetopleura lurida Panama F+++ 2022mm € 3,00 £2,59 $3,51 Hairy girdles, beautifully preserved. Web 24/12/16 Polyplacophora Ischnochitonidae Ischnochiton textilis South Africa F+++ 30mm+ € 4,00 £3,45 $4,68 30/04/21 Polyplacophora Ischnochitonidae Ischnochiton textilis South Africa F+++ 27.9mm € 2,80 £2,42 $3,27 30/04/21 Polyplacophora Ischnochitonidae Stenoplax limaciformis Panama F+++ 16mm+ € 6,50 £5,61 $7,60 Uncommon. 24/12/16 Polyplacophora Chitonidae Acanthopleura gemmata Philippines F+++ 25mm+ € 2,50 £2,16 $2,92 Hairy margins, beautifully preserved. 04/08/17 Polyplacophora Chitonidae Acanthopleura gemmata Australia F+++ 25mm+ € 2,60 £2,25 $3,04 02/06/18 Polyplacophora Chitonidae Acanthopleura granulata Panama F+++ 41mm+ € 4,00 £3,45 $4,68 West Indian 'fuzzy' chiton. Web 24/12/16 Polyplacophora Chitonidae Acanthopleura granulata Panama F+++ 32mm+ € 3,00 £2,59 $3,51 West Indian 'fuzzy' chiton. 24/12/16 Polyplacophora Chitonidae Chiton tuberculatus Panama F+++ 44mm+ € 5,00 £4,32 $5,85 Caribbean. 24/12/16 Polyplacophora Chitonidae Chiton tuberculatus Panama F++ 35mm € 2,50 £2,16 $2,92 Caribbean. 24/12/16 Polyplacophora Chitonidae Chiton tuberculatus Panama F+++ 29mm+ € 3,00 £2,59 $3,51 Caribbean. -
Acanthochitona Pygmea (Pilsbry, 1893)
Lista de especies del phylum Mollusca registradas para el Caribe colombiano Abra aequalis (Say, 1822) Abra longicallis (Sacchi, 1837) Abralia veranyi (Rüppell, 1844) Acanthochitona pygmea (Pilsbry, 1893) Acanthochitona rodea (Pilsbry, 1893) Acanthochitona spiculosa (Reeve, 1847) Acanthochitona venezuelana Lyons, 1888 Acanthopleura granulata (Gmelin, 1791) Acar domingensis (Lamarck, 1819) Acesta colombiana (H.E. Vokes, 1970) Acmaea antillarum (Sowerby, 1831) Acmaea leucopleura (Gmelin, 1791) Acmaea pustulata (Helbling, 1779) Acteocina candei (d'Orbigny, 1842) Acteocina recta (d'Orbigny, 1841) Acteon danaida Dall, 1881 Acteon punctostriatus (C.B. Adams, 1840) Actinotrophon actinophorus (Dall, 1889) Adrana gloriosa (A. Adams, 1855) Adrana patagonica (d'Orbigny, 1846) Adrana scaphoides Rehder, 1939 Adrana tellinoides (Sowerby, 1823) Aesopus obesus (Hinds, 1843) Aesopus stearnsi (Tryon, 1883) Agathotoma badia (Reeve, 1846) Agathotoma candidísima (C.B. Adams, 1850) Agatrix smithi (Dall, 1888) Agladrillia rhodochroa (Dautzenberg, 1900) Akera bayeri Marcus y Marcus, 1967 Alaba incerta (d'Orbigny, 1842) Alvania avernas (C.B. Adams, 1850) Alvania auberiana (d'Orbigny, 1842) Alvania colombiana Romer y Moore, 1988 Amaea mitchelli (Dall, 1889) Amaea retiñera (Dall, 1889) Americardia media (Linné, 1758) Amusium laurenti (Gmelin, 1791) Amusium payraceum (Gabb, 1873) Amygdalum politum (Verrill y Smith, 1880) Amygdalum sagittatum Rehder, 1934 Anachis cf. fraudans Jung, 1969 Anachis coseli Díaz y Mittnacht, 1991 Anachis hotessieriana (d'Orbigny, 1842) -
THE LISTING of PHILIPPINE MARINE MOLLUSKS Guido T
August 2017 Guido T. Poppe A LISTING OF PHILIPPINE MARINE MOLLUSKS - V1.00 THE LISTING OF PHILIPPINE MARINE MOLLUSKS Guido T. Poppe INTRODUCTION The publication of Philippine Marine Mollusks, Volumes 1 to 4 has been a revelation to the conchological community. Apart from being the delight of collectors, the PMM started a new way of layout and publishing - followed today by many authors. Internet technology has allowed more than 50 experts worldwide to work on the collection that forms the base of the 4 PMM books. This expertise, together with modern means of identification has allowed a quality in determinations which is unique in books covering a geographical area. Our Volume 1 was published only 9 years ago: in 2008. Since that time “a lot” has changed. Finally, after almost two decades, the digital world has been embraced by the scientific community, and a new generation of young scientists appeared, well acquainted with text processors, internet communication and digital photographic skills. Museums all over the planet start putting the holotypes online – a still ongoing process – which saves taxonomists from huge confusion and “guessing” about how animals look like. Initiatives as Biodiversity Heritage Library made accessible huge libraries to many thousands of biologists who, without that, were not able to publish properly. The process of all these technological revolutions is ongoing and improves taxonomy and nomenclature in a way which is unprecedented. All this caused an acceleration in the nomenclatural field: both in quantity and in quality of expertise and fieldwork. The above changes are not without huge problematics. Many studies are carried out on the wide diversity of these problems and even books are written on the subject. -
The Diet and Predator-Prey Relationships of the Sea Star Pycnopodia Helianthoides (Brandt) from a Central California Kelp Forest
THE DIET AND PREDATOR-PREY RELATIONSHIPS OF THE SEA STAR PYCNOPODIA HELIANTHOIDES (BRANDT) FROM A CENTRAL CALIFORNIA KELP FOREST A Thesis Presented to The Faculty of Moss Landing Marine Laboratories San Jose State University In Partial Fulfillment of the Requirements for the Degree Master of Arts by Timothy John Herrlinger December 1983 TABLE OF CONTENTS Acknowledgments iv Abstract vi List of Tables viii List of Figures ix INTRODUCTION 1 MATERIALS AND METHODS Site Description 4 Diet 5 Prey Densities and Defensive Responses 8 Prey-Size Selection 9 Prey Handling Times 9 Prey Adhesion 9 Tethering of Calliostoma ligatum 10 Microhabitat Distribution of Prey 12 OBSERVATIONS AND RESULTS Diet 14 Prey Densities 16 Prey Defensive Responses 17 Prey-Size Selection 18 Prey Handling Times 18 Prey Adhesion 19 Tethering of Calliostoma ligatum 19 Microhabitat Distribution of Prey 20 DISCUSSION Diet 21 Prey Densities 24 Prey Defensive Responses 25 Prey-Size Selection 27 Prey Handling Times 27 Prey Adhesion 28 Tethering of Calliostoma ligatum and Prey Refugia 29 Microhabitat Distribution of Prey 32 Chemoreception vs. a Chemotactile Response 36 Foraging Strategy 38 LITERATURE CITED 41 TABLES 48 FIGURES 56 iii ACKNOWLEDGMENTS My span at Moss Landing Marine Laboratories has been a wonderful experience. So many people have contributed in one way or another to the outcome. My diving buddies perse- vered through a lot and I cherish our camaraderie: Todd Anderson, Joel Thompson, Allan Fukuyama, Val Breda, John Heine, Mike Denega, Bruce Welden, Becky Herrlinger, Al Solonsky, Ellen Faurot, Gilbert Van Dykhuizen, Ralph Larson, Guy Hoelzer, Mickey Singer, and Jerry Kashiwada. Kevin Lohman and Richard Reaves spent many hours repairing com puter programs for me.