scHucHERT] INDEX AND BIBLIOGRAPHY. 419 



Strophalosia spondyliformis (White aud St. John) — Continued. 



Strophalosia spondyliformis Beecher, American Jour. Sci., 3(1 ser., XL, 1890, 



p. 242.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 17A, figs. 



25, 26. 

 Loc. Appanoose and Pottawattamie counties, Iowa. 



Strophalosia truncata (Hall). Hamilton, Portage, aud Ithaca (Dev.). 



Strophomena pustulosa Hall (non Productus pustulosus Phillips), Geol. N. Y. ; 



Rep. Fourth Dist., 1843, p. 189, fig. 4. 

 Productus truncatus Hall, Tenth Rep. N. Y. State Cab. Nat. Hist., 1857, p. 171. 

 Productella truncata Hall, Pal. New York, IV, 1867, p. 160, pi. 23, tigs. 12-24;— 



Second Ann. Rep. N. Y. State Geol., 1883, pi. 48, figs. 10-15.— Kindle, Bull. 



American Pal., 6, 1896, p. 35. 

 Productus (P.) truncatus Walcott, Mon. U. S. Geol. Survey, VIII, 1884, p. 131, 



pi. 14, fig. 2. 

 Productella (Strophalosia?) truncata Whiteaves, Cont. Canadian Pal., I, 1889, 



p. 112, pi. 16, figs. 1, 2. 

 Strophalosia truncata Beecher, American Jour. Sci., 3d ser., XL, 1890, p. 247* — 



Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 316, pi. 15B,fig8. 24-26; 



pi. 17, ligs. 10-15. 

 Loc. New York; Thedford, Ontario; Eureka district, Nevada. 



STROPHEODONTA Hall. Genotype Strophomena demissa Conrad. 



Stropheodonta Hall, Pal. New York, II, 1852, p. 63.— Hall and Clarke, Pal. New 



York, VIII, Pt. I, 1892, p. 284. 

 Strophodonta Hall, Geol. Survey Iowa, I, 1858, p. 491. — Billings, Canadian Jour. 



Sci. Arts, n. ser., VI, 1861, p. 332;— Proc. Portland Soc. Nat. Hist., 1863, p. 



108.— Hall, Pal. New York, IV, 1867, p. 78.— Nettelroth, Kentucky Fossil 



Shells, Mem. Kentucky Geol. Survey, 1889, p. 142. 

 Brachy prion Shaler, Bull. Mus. Comp. Zool., 4, 1865, p. 63. 

 Brachyprion and Douvilina Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, 



pp. 220, 286, 288, 289, 292; Eleventh Ann. Rep. N. Y. State Geologist, 1894, 



pp. 280, 281. 



Stropheodonta acanthoptera (Whiteaves). Upper Silurian. 



Strophomena acanthoptera Whiteaves, Canadian Rec. Sci., 1891, p. 294, pi. 3, 



figs. 1,2. 

 Loc. District of Saskatchewan and Lake Winnipegosis, Canada. 



Stropheodonta alveata Hall. Upper Helderberg (Dev.). 



Strophodonta alveata Hall, Sixteenth Rep. N. Y. State Cab. Nat. Hist., 1863, p. 



36;— Pal. New York, IV, 1867, p. 81, pi. 11, figs. 1-3. 

 Loc. Albany County, New York. 



Stropheodonta arcuata Hall. Chemung (Dev.). 



Strophodonta arcuata Hall, Geol. Survey Iowa, I, 1858, p. 492, pi. 3, figs, la-lc, 

 2a-2f.— Calvin, Bull. U. S. Geol. Survey, IV, 1878, p. 728.— Whiteaves, Cont. 

 Canadian Pal., I, 1892, p. 285. 



Strophodonta arcuata? Walcott, Mon. U. S. Geol. Survey, VIII, 1884, p. 121. 



Stropheodonta arcuata Hall and Clarke, Pal. New York, VIII, Pt. 1, 1892, p. 289, 

 pi. 15B, figs. 1-3. 



Loc. Rockford, Iowa; Naples, New York; Eureka district, Nevada; Lake Win- 

 nipegosis, Canada. 



Stropheodonta beckei Hall. Lower Helderberg (Dev.). 



Strophodonta beckii Hall, Pal. New York, III, 1859, p. 191, pi. 22, figs. la-It.— 



Meek, American Jour. Sci., 2d ser., XL, 1865, p. 33. — Hall, Second Ann. Rep. 



N. Y. State Geol., 1883, pi. 44, figs. 23, 24. 

 Strophomena (Strophodonta) beckii Hall, Tenth Rep. N. Y. State Cab. Nat. 



Hist., 1857, p. 52, figs. 1-4. 



