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The Molluscan Fauna of the Alum Bluff Group of Florida

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The Molluscan Fauna of the Alum Bluff Group of Florida If you no longer need this publication write to the Geological Surrey in Washington for an official mailing label to use in returning it UNITED STATES DEPARTMENT OF THE INTERIOR THE MOLLUSCAN FAUNA OF THE ALUM BLUFF GROUP OF FLORIDA PART VII. STENOGLOSSA (IN PART) GEOLOGICAL SURVEY PROFESSIONAL PAPER 142-G UNITED STATES DEPARTMENT OF THE INTERIOR Harold L. Ickes, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director Professional Paper 142-G THE MOLLUSCAN FAUNA OF THE ALUM BLUFF GROUP OF FLORIDA BY JULIA GARDNER PART VII. STENOGLOSSA (IN PART) Published July 1944 (Pages 437-491) UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1944 For sale by the Superinteudent of Documents, U. S. Government Printing Office, Washington 25, D. C. Price 25 cents CONTENTS Page introduction.. _____ ___________ ____________________________________^.__._______...___._._ - _-..____-______.___ 437 List of localities. ________________________________________________________________________________________________ 437 Systematic descriptions-_________________________________________________________________________________________ 439 Phylum Mollusca._________________________________________________________________________________________ 439 Class Gastropoda._____________________________________________________________________________________ 439 Order Ctenobranchia.______________________________________________________________________________ 439 Suborder Stenoglossa_______________________________________________________________________ ___ 439 Family Xancidae. __________________________________________________________________________ 439 Family Fasciolariidae______-._-_-.___-_________-___-__-___.____-__--.___--_-_-_-_-----_____-_. 442 Family Fusinidae.________________________________________________________________________ 447 Family Busyconidae_ _______________________________________________________________________ 449 Family Melongenidae. _____.______-_-__________________--___-_-._-_-_---___---_-------_-_-__. 458 Family Buccinidae__________________________________________________________________________ 459 Family Nassariidae. ___----_______-_-______________-________-_-._----_--_---------_-_-______ 462 Index._________________________________________________________________________________-_---_._____.___.___- 491 ILLUSTRATIONS Page Plate XLIX. Xancidae, Fasciolariidae, Fusinidae, Busyconidae.___________._______-_--________________-__--__--_-_- 488 L. Busyconidae, Melongenidae, Buccinidae, Nassariidae_ _-.___-______._^__---_______-______-___. _______._. 489 LI. Nassariidae_-__.____._--_--.__________ _._._._____-_.__-.^_---_____._-_.--_______-______-._---_-_--.--. 490 ii THE MOLLUSCAN FAUNA OF THE ALUM BLUFF GROUP OF FLORIDA By JULIA GARDNER PART VII. STENOGLOSSA (IN PART) INTRODUCTION The systematic description of the Mollusca of the Alum Bluff group is continued in this paper. The examination of the gastropod order Stenoglossa is begun and is carried from the Xancidae through the Nas- sariidae. Of these the genus Uzita, of the Nassariidae, is represented by the greatest number of species 28 species and subspecies. Busycon, of the Busyconidae, is next with 10 species. LIST OP LOCALITIES The following list shows the localities cited by number in the text and tables (see also map, Part I, p. 2): 2211. Lower bed, Alum Bluff, Liberty County, Fla. 2212. Tenmile Creek, 1 mile west of Baileys Ferry, Calhoun County, Fla. 2213. 1 mile below Baileys Ferry, Chipola River, Calhoun County, Fla. 2238. Flournoy's millrace, 2 miles east of Argyle, Walton County, Fla. 2564. McClellanid farm, 1 mile below Baileys Ferry, Calhoun County, Fla. 2645. McClellan farm, Shoal River, 5 miles east of Mossyhead, Walton County, Fla. 2646. Oak Grove, Yellow River, Okaloosa County, Fla. 3385. Gastropod Gulch, 4 miles southeast of Bainbridge, Decatur County, Ga. 3386. Roseland plantation, 3}£ miles southeast of Bainbridge, Decatur County, Ga. 3419. McClelland farm, 1 mile below Baileys Ferry, Calhoun County Fla. 3704. Quincy, Gadsden County, Fla. 3731. Near Mossyhead, sec. 6, T. 3 N., R. 21 W., Walton County, Fla. 3732. Dave Adams Mill Creek, sec. 2, T. 3. N., R. 21 W., Walton County, Fla. 3733. Three-quarters of a mile west of Shell Bluff, Shoal River, Walton County, Fla. 3742. Shell Bluff, Shoal River, Walton County, Fla. 3748. Summerville millrace, 1 mile east of Argyle, Walton County, Fla. 3856. 6 miles west-northwest of Mossyhead, Walton County, Fla. 5079. Half a mile below Shell Bluff, Shoal River, Walton County, Fla. 5080. First ravine below Shell Bluff, Shoal River, Walton County, Fla. 5184. First ravine below Shell Bluff, Shoal River, Walton County, Fla. 5193. Crowder's crossing, \% miles below Shell Bluff, Shoal River, Walton County, Fla. 5194. \% miles below Shell Bluff, Shoal River, Walton County, Fla. 5195.. First ravine below Shell Bluff, Shoal River, Walton County, Fla. 5618. 3^ miles southwest of De Funiak Springs, Walton County, Fla. 5630. 100 yards below Oak Grove Bridge, Yellow River, Okaloosa County, Fla. 5631. Oak Grove Bridge, Yellow River, Okaloosa County, Fla. 5632. Oak Grove, Yellow River, Okaloosa County, Fla. 5633. Oak Grove, Yellow River, Okaloosa County, Fla. 6175. Left bank of Suwannee River three-quarters of a mile above White Springs, Columbia County, Fla. 7054. 400 feet below bridge, Oak Grove, Okaloosa County, Fla. 7055. Old Senterfeit mill, 4}£ miles southwest of Laurel Hill, Walton County, Fla. 7148. Gastropod Gulch, 5}£ miles southeast of Bainbridge, Decatur County, Ga. 7151. Tenmile Creek, Calhoun County, Fla. 7183. Alum Bluff (lower bed), Liberty County, Fla. 7257. Sexton's marl bed, Tenmile Creek, sec. 11, T. 1 N., R. 10 W., Calhoun County, Fla. 7261. Upper Alaqua Lethu (?) Bluff, near De Funiak Springs, Walton County, Fla. 7264. De Funiak Cardium beds, Alaqua Creek, Walton County, Fla. 7893. Boynton Landing, Choctawhatchee River, Washington County, Fla. 437 GO 00 Local distribution of species of Stenoglossa (in part) in the Alum Bluff group of Florida and Georgia [pr, prolific; a, abundant; c, common; p, present; r, rare (not more than half a dozen individuals). The localities within each State and formation are arranged in geographic order from north to south and from west to east] ^ § CornellUniversity Georgia- Sg t> ° ts Oak Grove Florida Chipola formation -a'i Florida Oak Grove sand & collection Florida Shoal Elver formation sand Species P3 1 i 'SS _oa a "8 o 3386 3385 7148 7893 2212 7151 7257 2213 2564 3419 2211 7183 3704 6175 2646 5632 5631 5630 5633 7054 7055 ^ 3856 2645 3732 3733 3742 3731 5080 5184 5195 5079 51935194 2238 3748 7261 7264 5618 P P r P r P r P P r P ? Hesperisternia chipolana Gardner, n. c P f P P ? P P r c P .... c P P burnsii (Ball). ................. ? (Sycotypus) proterum Gardner, P P P r P r ---- c a a (Strongylocera) tribakus Gard- (Strongylocera) pedanus Gard- Tritiaria (Antillophos) dictyola r r P r r P r r a r r r r P P r P c P ? P watsoni (Maury).. ________ P r P P P r a P P P P dasynema cesta Gardner, n subsp. _____________ P P P r P a P P P r P c c P r P P c P r P ? bimitrodita Gardner, n. sp--_- _. P P dasa Gardner, n. sp .............. paraprista Gardner, n. sp. ....... r P c P veatchii (Maury). ________ P c P P r P - p P h^rrisi (Ma"ry) _________ P c a 9, grapta (Gardner) - ________ P P berthae (Maury) _______ .. c c r - P P .... p P P c c STENOGLOSSA (IN PAKT) 439 SYSTEMATIC DESCRIPTIONS This form would at first sight be taken for a variety of T. Wilsoni with a little shorter spire and more rounded whorls Phylum MOLLUSCA than that species, but a study of a good series shows the follow­ Glass GASTBOPODA ing distinctive characters: Order CTENOBRANCHIA The last whorl is rounded and not with flattened sides and the Suborder STENOGLOSSA keel at the shoulder is obsolete; there is no presutural constric­ Family XANCIDAE tion or band; the whorls, except in the earliest on two, are not Genus XANCUS Reeding appressed, but distinct or even partially channelled; the space of 20.0 mm. from the base of the larval shell forward includes 1798. Xancus Roeding, Museum Boltenianum, pt. 2, p. 134. three and a half instead of seven whorls; instead of sever or =Tur'binella Lamarck, 1799. more ribbed whorls there are but two or three; instead of uni­ form strong spiral threads as in T. Wilsoni, the spirals on the Type (by subsequent designation; Dall, Jour. Conch- early whorls alternate coarse and fine; the whorls are grace­ ology, London, vol. 11, p. 296, 1906): VolMta pyrum fully rounded and not flattened; the diameter of the spire at Gmelin. Recent in the Indian Ocean. the anterior end of the larval shell is 4.0 mm., instead of 1.3 Shell large, moderately heavy, pear-shaped or fusi­ mm.; the spirals are finer and continue more distinctly over form, protoconch large, papillate. Spire varying in the whorls in the adult; the adult shell has six whorls beside the nucleus, T. Wilsoni has eleven or more in the same length. relative altitude from more than one-half to less than T. chipolana, varies, as all the species do to.some extent, ir its one-third that of the entire shell. Whorls rather nu­ elongation and in the presence or absence of an umbilical chink; merous, flattened or angulated at the periphery, closely the aperture is more than half the length of the shell and has appressed at the sutures. External sculpture domi- a prominent sinus behind; the apertural callus is prominent, the nantly axial, frequently nodose. Anterior canal lip simple, the canal narrow and moderately differentiated, A rather short, thick specimen [a cotype] measures 120.0 x 55.0 straight or very loosely sigmoidal. Outer lip strongly mm., without the nucleus; a more elongated specimen 138.0 x 55.0 arcuate, not reinforced nor lirate within. Inner lip mm., the aperture being 85.0 mm. long. The nucleus is re­ much thickened and reflected. Three robust horizon­ markable, consisting of more than four, (none are complete) tal plaits borne near the base of the body and, in some spirally striate, or smooth, regularly coiled whorls, probably species, notably the genotype, a fourth much less promi­ preceded by a tip like than of T. regina (PL XLIX, fig. 1). The fourth of these whorls has exactly the same diameter as the nent fold in front of them.
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