6CHUCHERT.1 INDEX AND BIBLTOGKAPHY. 241 



Leptaena rhomboidalis ventricosa Hall. Oriskany (Dev.). 



Stroplioiniua depresHii var. ventricosa Hall, Tenth Rep. Xew York State Cab. 



Nat. Hist., 1857, p. 55. 

 Stropbomena riigosa var. ventricosa Hall, Pal. New York, III, 1859, p. 417, pi. 



94, tigs. 2, 3. 

 Leptaina rbomboidalia var. ventricosa Hall and Clarke, Pal. New York, VHI, 



Pt. I, 1892, pi. 15A, fig. 43. 

 Loc. Albany and Schoharie counties. New York; Cumberland, Maryland; Cayuga, 



Ontario. 



LeptiTiia rugosa=L. rhomboidalis. 

 Leptrena saxea Sar(lesoii=Plectambonites sericeus. 

 Leptiiena sericea Sowerby=Plectambonites sericeus. 

 Leptfena sordida Billiiigs=Leptella sordida. 



Lept8Bna(?) stelzneri Kayser. Ordovician. 



Leptipna stelzneri Kayser, Palseoutographica, Suppl., Ill, 1876, p. 21, pi. 3, fig. 21. 

 Loc. Guaco, Argentiue Republic. 



Ohs. Since this species has a high ventral area and a perforated deltidium it is 

 . probably a Clitambonites. 



Leptfena striata Hall=Stroplionella striata. 



Leptjena subplana Hall=Orthotlietes subplanus. 



Leptfena subqiiadrata Hall = Christian ia subquadrata. 



Leptrena siibtenta Hall=Strophomena trentonensis or S. rugosa sub- 



tenta. 

 Lepta^ua sulcata de Verneuil=Strophomena sulcata. 

 Leptaena teuuilineata Hall=Eaflnesquina tenuiliueata. 

 Leptfena tenuistriata Hall=L. rhomboidalis. 

 Lepta?na trausversalis=Plectambonites transversalis. 

 Leptfena transversalis var. alabamaensis Foerste = Plectambonites 



transversalis alabamaensis. 

 Leptfena trilobata O wen = Stropbomena trilobata. 



Leptaena unicostata Meek and Worthen. Lorraine (Ord.). 



Lepta-na (u. sp. ?) Owen, Geol. Survey Wisconsin, Iowa, Minnesota, 1852, pi. 2B, 



fig. 3. [See specimen in U. S. Nat. Mus., Cat. Invert. Foss., 17908.] 

 Stropbomena unicostata Meek and Worthen, Geol. Survey Illinois, III, 1868, p. 



335, pi. 4, fig. 11.— Whitfield, Geol. Wisconsin, lY, 1882, p. 262, pi. 12, fig. 14. 

 Rafinesquina unicostata Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 



15A, fig. 39; pi. 20, fig. 25. 

 Leptaena unicostata Winchell and Schuchert, Minnesota Geol. Survey, III, 1893, 



p. 411, pi. 32, figs. 6-9.— Whiteaves, Pal. Foss., Ill, Pt. Ill, 1897, p. 174. 

 Loc. Savanna and Wilmington, Illinois; Delafield and Iron Ridge, Wisconsin; 



Spring Valley and Granger, Minnesota ; Lattners, Iowa ; Rapids of the Nelson 



River, Lake Winnipeg, Manitoba. 



Leptfena variolata d'Orbigny=Chonetes variolatiis. 

 Leptfena vicina Castelnau=Ohonetes vicinus. 



LEPTJENISCA Beecher. Genotype Leptfena concava Hall. 



Lepta'uisca Beeihcr, American Jour. Sci., 3d8cr., XL, 1890, p. 239, pi. 9, figs. 1-5. — 

 Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 300; -Eleventh Ann. 

 Rep. New York State Geologist, 1894, p. 291. 



Bull. 87 IG 



