8CHUCHERT.] INDEX AND BIBLIOGRAPHY. 457 



Triplecia extans (Emmons). Treutou (Ord.). 



Atrypa extans Emmons, Geol. N. Y. ; Rep. Second Dist., 1842, p. 395, fig. 6. — 



Hall, Pal. New York, I, 1847, p. 137, pi. 33, fig. 1. 

 Triplesia extans. Hall, Ibidem, III, 1859, p. 523, figs. 1-3. 

 Triplecia extans Hall and Clarke, Pal. New York, ^^III, Pt. I, 1892, p. 270, 



pi. lie, figs. 1-7. 

 Loc. Watertown, Lowville, and Boouville, New York. 



Triplecia niagaraensis Hall and Clarke. Magara (Sil.). 



Triplecia niagarensis Hall and Clarke, Pal. New York, VIII, Pt. II, 1895, pi. 83, 



figs. 16-20. 

 Loc. Near Milwaukee, Wisconsin. 



Triplecia nucleus Hall. Trenton (Ord.). 



Atrypa nucleus Hall, Pal. New York, I, 1847, p. 138, pi. 33, fig. 2. 

 Triplesia nucleus Hall, Ibidem, III, 1859, p. 522. 

 Triplecia nucleus, Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 270, 



pi. lie, figs. 8, 9. 

 Loc. Middleville, New York. 



Triplecia ortoni Meek. Clinton (Sil.). 



Dicraniscus ortoni Meek, American Jour. Sci., 3d ser., IV, 1872, p. 280. 

 Triplesia ortoni Meek, Pal. Ohio, I, 1873, p. 178, pi. 15, fig. 1. 

 Triplecia ortoni. Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 270; 



pi. lie, figs. 12-20.— Foerste, Geol. Ohio, VII, 1895, p. 585. 

 Loe. Dayton, Ohio; Newson, Tennessee. 



Triplecia (?) radiata Whitfield. Calciferous (Ord.). 



Triplesia radiata AVhittield, Bull. American Mus. Nat. Hist., II, 1889, p. 43, pi. 7, 



figs. 5-8. 

 Triplecia radiata, Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 271. 

 Loc. Beekmantown, New York. 



Triplecia ulricM Wincliell and Scliucbert. Lorraine (Ord.). 



Triplecia ulricbi W. and S., Minnesota Geol. Survey, III, 1893, p. 409, fig. 34, 

 Loc. Wykoff and Spring Valley, Minnesota. 



Triplesia ambigua Hall=Camarel]a anibigua. 

 Triplesia calcifera Walcott = Syntropliia calcifera. 

 Triplesia congesta Han=Hyattella congesta. 

 Triplesia lateralis Wbitfleld=Syntropliia lateralis. 

 Triplesia primordialis Whitfield = Syntropliia primordialis. 

 Triplesia putillus Hall=Minmlns waldronensis. 

 Trij)lesia (^uadricostata Han=HyattelIa congesta. 



TROPIDOLEPTUS Hall. Genotype Strophomena cariuata Conrad. 



Tropidoleptus Hall, Tenth Rep. N. Y. State Cab. Nat. Hist., 1857, p. 152 (unde- 

 fined); — Twelfth Rep. Ibidem, 1859, p. 31 (undefined); Twentieth Rep. — 

 Ibidem, 1867, pp. 165, 279;— Pal. New York, IV, 1867, p. 404.— Nettelroth, 

 Kentucky Fossil Shells, Mem. Kentucky Geol. Survey, 1889, p. 46. — Hall 

 and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 302 ;— Thirteenth Ann. Rep. 

 N. Y. State Geologist, 1895, p. 870. 



Tropidoleptus carinatus (Conrad). Marcellus and Hamilton (Dev.). 



Strophomena carinata Conrad, Third Ann. Rep. N. Y. Geol. Survey, 1839, p. 64. 

 Lepta'ua laticosta (Hall) de Verneuil, Bull. Soc. Geol. France, 2d ser., IV, 1847, 



p. 703. 

 Tropidoleptus carinatus Hall, Tenth Rep. N. Y. State Cab. Nat. Hist., 1857, p. 



151, figs. 1,2;— Twelfth Rep. N. Y. State Cab. Nat. Hist., 1859, p. 31, figs. 



