scHucHEET.] INDEX AND BIBLTOGKAPHY. 241 



Leptaena rhomboidalis ventricosa Hall. Oriskany (Dev.). 



Strophomena depressa var. ventricosa Hall, Tenth Rep. New York State Cab. 



Nat. Hist., 1857, p. 55. 

 Strophomena rugosa var. ventricosa Hall, Pal. New York, III, 1859, p. 417, pi. 



94, tigs. 2, 3. 

 Leptaena rhomboidalis var. ventricosa Hall and Clarke, Pal. New York, VIII, 



Pt. I, 1892, pi. loA, fig. 43. 

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



Ontario. 



Leptaena rugosa=L. rhomboidalis. 

 Leptaena saxea Sardeson=Plectambonites sericeus. 

 Leptaena sericea Sowerby=Plectambonites sericeus. 

 Leptaena sordida Billings=Leptella sordida. 



Lept8ena(?) stelzneri Kayser. Ordovician. 



Leptaena stelzneri Kayser, Palaeontographica, SuppL, III, 1876, p. 21, pi. 3, fig. 21. 

 Loc. Guaco, Argentine Republic. 



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

 probably a Clitambonites. 



Leptaena striata Hall=rStrophonella striata. 



Leptaena subplaua Hall=Orthothetes subplanus. 



Leptaena subquadrata Hall = Christian ia subqnadrata. 



Leptaena subtenta Hall= Strophomena trentonensis or S. riigosa sub- 



tenta. 

 Leptaena sulcata de Verneuil=Strophomena sulcata. 

 Leptaena tenuilineataHall=Eaflnesquina teuuilineata. 

 Leptaena tenuistriata Hall=L. rhomboidalis. 

 Leptaena transversalis=Plectambonites transversalis. 

 Leptaena transversalis var. alabamaensis Foerste = Plectambonites 



transversalis alabamaensis. 

 Leptaena trilobata O wen = Strophomena trilobata. 



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



Leptaina (n. sp. f) Owen, Geol. Survey Wisconsin, Iowa, Minnesota, 1852, pi. 2B, 



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

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



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

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



15 A, 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. 



Leptaena variolata d'Orbigny=Chonetes variolatus. 

 Leptaena vicina Castelnau=Ohonetes vicinus. 



LEPTiENISCA Beecher. Genotype Leptaena concava Hall. 



Leptaenisca Beecher, American Jour. Sci., 3dser., 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 



