feVHucHKRT.] ESTDEX AND BIBLIOGRAPHY. 379 



Seminula subquadrata TTall. Kaskaskia (L. Carb.). 



Athyris sub(|na(lratii Hall, Ueol. Survey Iowa, I, Pt. II, 1858, p. 703, pi. 27, fig. 

 2, woodcut p. 708.— Whittield, Auuals N. Y. Acad. Sci., V, 1891, p. 58.5, pi. 

 14, figs. 1-3;— Geol. Ohio, VII, 1895, p. 472, pi. 10, ligs. 1-3.— Keyes, Geol. Sur- 

 vey Missouri, V, 1895, p. 92. 



Atbyris 8ub(|uadrata ? Hall and Whitlield, King's U. S. Geol. Expl. 40th Pari., 

 IV, 1877, p. 271, pi. 5, ligs. 19, 20. 



Seminula sulxiuadrata Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 95, 

 pi. 47, ligs. 7-9, 15, IG; pi. 81, figs. 30, 31. 



Loc. Chester, Illinois; Crittenden County, Kentucky; Newtonvilloand Maxville, 

 Ohio; Oquirrh Mountains, Utah. 



Ohs. See Cleiothyris clintonensis, 



Seminula titicacaensis (Gabb), Upper Carboniferous. 



Tonliratula titicacensis Gabb, Jour. Acad. Nat. Sci. Philadelphia, 2d ser., VIII, 



1881, p. 302, pi. 42, fig. 11. 

 Loc. Lake Titicaca, Bolivia. 



Seminula trinucleus Hall. St. Louis (L. Carb.). 



Terebratula trinucleus Hall, Trans. Albany Institute, IV, 1858, p. 7; — Geol. Sur- 

 vey Iowa, I, Pt. II, 1858, p. 659, pi. 23, figs. 4, 5. 



Athyris trinuclea Whitfield, Bull. American Mus. Nat. Hist., I, 1882, p. 50, pi. 6, 

 figs. 22-27.— Hall, Twelfth Rep. State Geol. Indiana, 1883, p. 329, pi. 29, figs. 

 22-27. 



Seminula trinuclea Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, pp. 94, 95, 

 fig. 65; pi. 47, figs. 5, 6, 10-14. 



Loc. Bloomington and Spergen Hill, Indiana; Alton, Illinois; Boonville, Mis- 

 souri; Princeton, Kentucky. 



Ols. See Cleiothj-ris reflexa. 



Seminula wasatchensis (White). Upper Carboniferous. 



Rhynchouella wasatchensis White, Wheeler's Expl. and Survey west of 100th 

 Meridian, Prel. Rep. 1874, p. 19;— Ibidem, Final Rep., 1875, p. 130, pi. 9, fig. 3. 

 Loc. Wasatch Range, near Provo, Utah. 

 01)s. Is related to S. subtilita. The great anterior thickening is due to old age. 



Sieberella CEhlert, and Hall and Clarke=Gypidula. 



Ohn. It may prove that Sieberella will be useful as a subgenus of Gypidula. 



SIPHONOTRETA de Yern. Genotype Crania uuguiculata Eicliwald. 

 Siphonotreta de Verneuil, G^ol. de la Russie d'Europe et des Mont, de I'Oural, 

 II, 1845, p. 286.— Dall, Bull. U. S. Nat. Mus., 8, 1877, p. 62.— Hall and Clarke, 

 Pal. New York, VIII, Pt. I, 1892, pp. 110, 167.— Winchell and Schuchert, 

 Minnesota Geol. Survey, III, 1893, p. 358. — Hall and Clarke, Eleventh Ann. 

 Rep. N. Y. State Geologist, 1894, p. 252. 



Siphonotreta (?) micula jNIcCoy. Calciferous (Ord.). 



Siphonotreta ? micula Ami, Rep. Progress Geol. Nat. Hist. Survey Canada for 



1887-88, 1889, p. 52K. 

 Loc. Great Britain; near Laevis, Canada. 



Siphonotreta (?) minnesotaensis Hall and Clarke. Trenton (Ord.). 



Siphonotreta ? rainnesotensis Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, 

 pp. 112, 177, pi. 4, figs. 37, 38. — Winchell and Schuchert, Minnesota Geol. 

 Survey, III, 1893, p. 358, pi. 29, figs. 23, 24. 



Loc. Minneapolis, Minnesota. 



Siphonotreta scotica Whiteaves=Schizainbon ? fissus americanus. 

 SPH^ROBOLUS Matthew. Genotype Lingulella ? spissa Billings. 



Sphaerobolus Matthew, Trans. Royal Soc Canada, 2d ser., I, 1896, p. 263. 



