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THE FESTIVUS ISSN: 0738-9388 a Publication of the San Diego Shell Club (?mo< . fn>% Vo I. 12 ' 2 ? ''f/ . ) QUfrl THE FESTIVUS ISSN: 0738-9388 A publication of the San Diego Shell Club Volume: XXII January 11, 1990 Number: 1 CLUB OFFICERS SCIENTIFIC REVIEW BOARD President Kim Hutsell R. Tucker Abbott Vice President David K. Mulliner American Malacologists Secretary (Corres. ) Richard Negus Eugene V. Coan Secretary (Record. Wayne Reed Research Associate Treasurer Margaret Mulliner California Academy of Sciences Anthony D’Attilio FESTIVUS STAFF 2415 29th Street Editor Carole M. Hertz San Diego California 92104 Photographer David K. Mulliner } Douglas J. Eernisse MEMBERSHIP AND SUBSCRIPTION University of Michigan Annual dues are payable to San Diego William K. Emerson Shell Club. Single member: $10.00; American Museum of Natural History Family membership: $12.00; Terrence M. Gosliner Overseas (surface mail): $12.00; California Academy of Sciences Overseas (air mail): $25.00. James H. McLean Address all correspondence to the Los Angeles County Museum San Diego Shell Club, Inc., c/o 3883 of Natural History Mt. Blackburn Ave., San Diego, CA 92111 Barry Roth Research Associate Single copies of this issue: $5.00. Santa Barbara Museum of Natural History Postage is additional. Emily H. Vokes Tulane University The Festivus is published monthly except December. The publication Meeting date: third Thursday, 7:30 PM, date appears on the masthead above. Room 104, Casa Del Prado, Balboa Park. PROGRAM TRAVELING THE EAST COAST OF AUSTRALIA Jules and Carole Hertz will present a slide program on their recent three week trip to Queensland and Sydney. They will also bring a display of shells they collected Slides of the Club Christmas party will also be shown. Meeting date: January 18, 1990 CONTENTS Club news 2 "Twins" Mopalia cirrata Berry and M. sinuata Carpenter GEORGE A. HANSELMAN 3 Book news: Cowries and their relatives of southern Africa, reviewed HENRY W. CHANEY (reviewer) 8 CORRECTION to Hertz & Hertz (Festivus XVI (10) "Survey of mollusks at Punta Asuncion and vicinity, Baja California, during November 10-14, 1981" 9 What is Byne's disease? CAROLE M. HERTZ 10 1990 Low tides for the northern Gulf of California 11 . Page 2 THE FESTIVUS Vol.XXII(l): 1990 THE FESTIVUS 1970-1990 With this issue, THE FESTIVUS begins its twenty-first year of continuous publication. After the demise in 1969 of the NEWS OF THE WESTERN ASSOCIATION OF SHELL CLUBS, a quarterly publication which included news and articles from all the west coast shell clubs, the San Diego Shell Club was left without a publication. Much lively discussion among the members resulted in the launching, in 1970, of the Club's own publication. The Festivus, named for Pteropurpura festiva (Hinds, 1844) (original orthography Murex festivus) the San Diego Shell Club logo. From the first meeting it was agreed unanimously to strive for a high level of articles excluding chit-chat and personal notices. Mrs. Blanche Brewer, the Club's contributing editor to the News of the Western Association..., was the first editor retiring, at her request, in 1975. The Festivus has grown from a mimeographed publication to a peer-reviewed periodical with contributors from far beyond our local area. In 1983, The Festivu s provided subscribers their first supplement followed by additional supplements in 1986 and 1988. Now with this January issue we include a color plate for the first time I herewith express my appreciation to those who have supported and encouraged us: our review board, longterm subscribers, contributors, our staff photographer and volunteer assistants and our local members, who by their generosity at our annual auctions, continue to make The Festivus possible. A NEW MEMBER OF THE FESTIVUS REVIEW BOARD The Festivus is pleased to announce the addition to its Editorial Board of Dr. Douglas J. Eernisse. Dr. Eernisse of the University of Michigan, is an Assistant Professor of Biology and Assistant Curator of Mollusks whose special field of expertise is the Polyplacophora DUES ARE DUE Club membership dues are due for the year 1990. The rate is $10.00, single membership; $12.00 family; $12.00 overseas (surface mail); $25.00 overseas (air mail). With the high printing and postage costs, this will be the last issue of The Festivus to be sent to any but paid-up members. Please send your dues to the Club address or pay Treasurer Margaret Mulliner at the January meeting. THE ANNUAL CLUB CHRISTMAS DINNER PARTY It was a GREAT party! Over forty members, longtime and new, celebrated together welcoming in the holiday season and toasting the close of a most successful Club year. Master-of-ceremonies , Ron McPeak "outstalled" the 1989 officers and installed the new. After outgoing president, Larry Buck thanked his board and Club members for their help, Carole Hertz proudly reported that The Festivus had completed 20 years of publication. She thanked the Club for its continued support and then members were gifted with a delicious cake with an enormous whipped cream Murex festivus on top in honor of the occasion. A highlight of the evening was the surprise presentation by Ron of two San Diego Shell Club honorary memberships. The Club ha.d only awarded two such memberships in its long history, both over fifteen years ago. One was to Rudolf Stohler and the other to Frank Good. The first of the new honorary memberships was given to Charter member John Souder and the second to Anthony D'Attilio. Both were roundly applauded as they received their framed honorary membership certificates. A slide program, "What's new this year?" followed. Members showed slides taken during 1989 and gave brief commentary. With the fine photographers in the Club, the show was a great treat. The evening program closed with the traditional, and always enjoyable, shel] gift exchange. Afterward most lingered awhile to enjoy the warmth and friendship of a very special evening. : , ; Vol . XXII (1) : 1990 THE FESTIVUS Page 3 "TWINS" MOPALIA CIRRATA BERRY AND M. SINUATA CARPENTER GEORGE A. HANSELMAN 5818 Tulane Street, San Diego, California 92122 Members of the chiton genus Mopalia } with their ornate sculpture and intricately structured girdle adornment, perhaps display more varied and complex assemblages of characteristics than any other chiton genus. Thus it is surprising to find that two Mopalia species so closely resemble each other superficially that separation appears difficult. These species are Mopalia sinuata Carpenter, 1864, and Mopalia cirrata Berry, 1919. As his original description Dr. Philip P. Carpenter (1864:648) published this laconic sentence: "218. IMopalia sinuata n.s. Small, raised sharp back, red and blue, engine-turned post, valve deeply notched." The following year Carpenter (1865:59) amplified this description in Latin, reproduced without translation by subsequent authors (Palmer, 1958:283, et al.). I therefore offer my translation: "Descriptions of New Species and Varieties from the Puget Sound Area Collected by Dr. Kennerley, recently deceased. "A Mopaliaj the shell small, somewhat elongated, elevated, the jugum sharply angled; finely maculated with reddish and bluish; the valves elongate, slightly squared; the lateral areas bearing narrow ribs, somewhat elevated, granulose on both sides; the sutures also granulose; the entire surface very distinctly reticulated, the central areas strongly punctate, the lateral areas and terminal valves moderately so; the terminal valve sculptured like the lateral areas, the sharp ribs radiating and the interstices reticulated; the posterior valve deeply incised; the sinus deep, extending weakly to the acute mucro: roseate within; the apical margins entirely granulose and curved longitudinally; the sutural sinus small, narrow; the insertion plates of the median valves with one slit; the anterior valve with about 8, adjoining the ribs; posterior valve with lateral slits corresponding to the position of the ribs, very curved behind; the bordering girdle leathery, with few hairs; small rounded pores next to the sutures on each side. "Habitat Two specimens collected by Kennerley in Puget Sound. "The form of the posterior valve corresponds to that of Mopalia; the poorly defined sutural pores differ." Dr. Henry A. Pilsbry (1893 (14) : 303 , pi. 62, figs. 95-97) issues the following diagnosis "M. SINUATA Carpenter. "Shell oblong, elevated and strongly carinated, the side-slopes straight. Color whitish, clouded with delicate blue-green and maculated with rich tawny brown. "Median valves hardly beaked, the lateral areas not raised, but strongly defined by an elevated diagonal rib; sculptured with two oblique series of fine riblets forming a latticed pattern. Central areas having a series of longitudinal curved riblets converging toward the median keel, crossed by curved radiating threads a little finer and less prominent (fig. 97). Anterior valve having 8 (not counting the posterior sutural borders) strong radiating ribs narrower than the latticed intervals. Posterior valve depressed, the mucro being at the posterior third. "Interior bluish-white. Sinus very small and narrow. Anterior valve having 8 slits, median 1 slit; teeth thickened outside at the edges of the slits. Posterior valve (fig. 96) having a deep rounded median sinus behind (which is continued upward in a superficial excavation to the macro), and a single slit on each side. Page 4 THE FESTIVUS Vol. XXII (1): 1990 "Girdle rather narrow, leathery, ’dusty' bearing a few hairs, with a rounded pore at each suture (fig. 95). "Length 11^, breadth 7 mill.; divergence 105°. "Puget Sound (Kennerley) : San Francisco Bay (Newcomb). "IMopalia sinuata CPR. , Proc. Acad. Nat. Sci. Phila. , 1865, p. 59 —Placiphorella sinuata CPR., MS and in DALL, Proc. U.S. Nat. Mus. 1878, p. 303, 306. —Osteochiton sinuatus DALL, l.c. 1886, p. 211. "This little species has the form and sculpture of the true Mopalia , but differs from them in the possession of a bristle or hair-bearing pore at each of the sutures, the girdle elsewhere bearing sparsely scattered hairs on the leathery, minutely roughened surface.
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