scHDCHERT.] INDEX AND BIBLIOGRAPHY. 311 



Plectambonites sericeus (Sowerby) — Contiuued. 



N. Y. State Geul., 1883, pi. 46, figs. 25-29.— Foerste, Proc. Boston Soc. Nat. 



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



39, fig. 9. 

 Leptaiua sericea? White, Wheeler's Expl. Survey west of the 100th Merid., IV, 



1875, p. 70, pi. 1, fig. 7. 

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



Emmons, Geol. N. Y. ; Rep. Second Dist., 1842, p. 394. 

 Strophomena semiovalis Vanuxem, Geol. N. Y. ; Rep. Third Dist., 1842, p. 47. 

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

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



figs. 25-29. — Winchell and Schuchert, Minnesota Geol. Survey, III, 1893, p. 



414, pi. 32, figs. 10-12.— Whiteaves, Pal. Foss., HI, Pt. Ill, 1897, p. 174. 

 LeiJta'ua minnesotensis Sardeson, Minnesota Acad. Nat. Sci., Ill, 1892, j). 329, pi. 



4, figs. 24, 25. 

 Leptiena precosis Sardeson, Ibidem, 1892, p. 329, pi. 4, figs. 26-28. 

 Leptiena recedeus Sardeson, Ibidem, 1892, p. 330, pi. 4, figs. 29-32. 

 LeptsBua saxea Sardeson, Ibidem, 1892, p. 330, pi. 4, figs. 33-35. 

 Loc. England; Nevr York; Ohio; Indiana; Kentucky; Missouri; Wisconsin; 



Minnesota; Manitoba; Talacastra, Argentine Rejiublic. 



Plectambouites teneia Shaler= Plectambonites transversalis. 



Plectambonites transversalis (Wahleuberg). Clintoii-ISriagara (Sil.). 



Anomites 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. 



Leptasna 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. 



Leptiena 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 Temiscouata, New Brunswick. 



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



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



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

 Loc. Collinsville, Alabama. 



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



Leptania prolougata Foerste, Bull. Denison Univ., I, 1885, p. 79, pi. 13, fig. 5. 

 Leptiena transversalis var. prolougata Foerste, Proc. Boston Soc. Nat. Hist., 



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

 Loc. Dayton, Ohio; Wildwood Station, Georgia. 



PLECTORTHIS Hall and Clarke. Genotype Ortliis plicatella Hall. 



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



Plectorthis Hall and Clarke, Piil. New York, VIII, Pt. I, 1892, pp. 194, 221.— 

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

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



Plectorthis gequivalvis (Hall). Lorraine (Ord.). 



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

 32, fig. 6. 



