scHUCHEET.) INDEX AND BIBLIOGRAPHY. 311 



Plectambonites sericeus (Sowerby) — Continued. 



N. Y. State Geol., 1883, pi. 4G, figs. 25-29.— Foerste, Troc. Boston Soc. Nat. 



Hist., XXIV, 1890, p. 293.— Keyes, Geol. Survey Missouri, V, 1895, p. 75, pi. 



39, fig. 9. 

 Leptii'ua sericea? White, Wluielcr's Ex])l. Survey west of l\\f lOOth Mi:ri(l., IV, 



1875, p. 70, pi. I, iig. 7. 

 Stropbomena sericea Conrad, Third Ann. Rep. Geol. Survey N. Y., 1840, p. 201. — 



Emmons, Geol. N. Y. ; Kcp. Seeond Dist., 1812, p. :>9I. 

 Strophomena semiovalis Vanuxem, Geol. N. Y. ; Rep. Third Dist., 1812, p. 47. 

 Leptii'ua aspera James, Cincinnati Quart. Jour. Sci., I, 1874, p. 151. 

 Plectambonites sericea, Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 15, 



figs. 25-29. — Wincbell and Scbnclunt, Minnesota Geol. Survey, III, 1893, p. 



414, pi. 32, tigs. 10-12.— Wbiteaves, Pal. Foss., Ill, Pt. Ill, 1897, p. 174. 

 Leptiena minnesotensis Sardesou, Minnesota Acad. Nat. Sci., Ill, 1892, p. 329, pi. 



4, figs. 24, 25. 

 Leptama precosis Sardesou, Ibidem, 1892, p. 329, pi. 4, figs. 26-28. 

 Leptiena recedens Sardesou, Ibidem, 1892, p. 330, pi. 4, figs. 29-32. 

 LeptPBua saxea Sardesou, Ibidem, 1892, p. 330, pi. 4, figs. 33-35. 

 Log. England; New York; Ohio; Indiana; Kentucky; Missouri; Wisconsin; 



Minnesota; Manitoba; Talacastra, Argentine Republic. 



Plectambonites teneia Shaler= Plectambonites trans versalis. 

 Plectambonites transversalis (Wahlenberg). Clin ton- iSTiagara (Sil.), 



Anoniites transversalis Wahlenberg, Act. Soc. Upsaliensis, III, 1821, p. 64. 



Strophomena elegantula Hall, Geol. N. Y. ; Rep. Fourth Dist., 1843, p. 72, fig. 1. 



Strophomena transversalis Hall, Ibidem, 1843, p. 105, fig. 4. 



Leptama transversalis Hall, Pal. New York, II, 1852, p. 256, pi. 53, fig. 5.— Bill- 

 ings, Canadian Nat. Geol., I, 1856, p. 138, pi. 2, figs. 14, 15. — Hall, Second 

 Ann. Rep. N. Y. State Geol., 1883, pi. 46, figs. 34-36. 



Plectambonites area and tenera Shaler, Bull. Mus. Comp. Zool., 4, 1865, p. 64. 



Leptaina transversalis var. elegantula Foerste, Proc. Boston Soc. Nat. Hist., 

 XXIV, 1890, p. 294, pi. 6, fig. 6. 



Plectambonites transversalis Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, 

 p. 298, pi. 15, figs. 34-36.— Foerste, Geol. Ohio, VII, 1895, p. 566, pi. 25, fig. 5; 

 pi. 30, fig. 13; pi. 31, fig. 6. 



Loc. Europe; New York; Osgood, Indiana; Wisconsin; Dundas and Hamilton, 

 Ontario; Anticosti; Lake Temisiouata, New Brunswick. 



Plectambonites transversalis alabamaensis (Foerste). Clinton (Sil.). 



Lepta-na transversalis var. alabamensis Foerste, Proc. Boston Soc. Nat. Hist., 



XXIV, 1890, p. 296, pi. 5, fig. 9. 

 Loo. Collinsvillc, Alabama. 



Plectambonites transversalis prolongatus (Foerste). Clinton (Sil.). 



Lejita'ua prolougat.a Foerste, Bull. Denison Univ., I, 1885, p. 79, pi. 13, fig. 5. 

 Lepta'ua transversalis var. prolongata Foerste, Proc. Boston Soc. Nat. Hist., 



XXIV, 1890, p. 297, pi. 5, Iig. 13. 

 Loc. Dayton, Ohio; Wildwood Station, Georgia. 



PLECTORTHIS Uall and Clarke. Genotype Orthis plicatella Hall. 



Orthis (group of O. plicatella) Hall, Bull. Geol. Soc. America, I, 1889, p. 20. 



Plectorthis Hall amd Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 194, 221.— 

 Wincbell and Schuchert, Minnesota Geol. Survey, III, 1893, p. 435. — Hall 

 and Clarke, Eleventh Ann. Rep. N. Y. State Geologist, 1894, p. 266. 



Plectorthis sequivalvis (Hall). Lorraine (Ord.). 



Orthis iequivalvis Hall (non Davidson, 1847), Pal. New York, I, 1847, p. 120, pi. 

 32, fig. 6. 



