io6 Bryant Walker 



Genus CARINIFEX W. G. Binney, 1863. 



Megastropha Lea, 1866 



CarinifEx ne;wbi;rryi minor Cooper. 



Carnifex newherryi var. ? minor Cooper, Pr. Cal. Acad. Sci., IV, 1870, p. 98, 

 Type locality not stated. 



CARINIfKX PONSONBYI E. A. Smith. 



Carinifex ponsonbyi E. A. Smith, P. Z. S. Lond., 1875, p. 536, text-fig. 

 Plancrbis ponsonbyi Sowerby, Con. Icon., Planorbis 1876, Sp. 80, pi. X, 



figs. 8oa-b. 

 Type locality: California. 



Call (^16, p. T40) states that the figure in the P. Z. S. is interchanged with 

 that of Diala leithii described at the same time. 



Family PHYSID^. 

 Genus PHYSA Draparnaud. 

 Dall (32, p. 100) has proposed the following arrangement: 



Section physa s. s. 



Type P. fontinalis L. 



Section costatjSlla Dall. 



Type P. costata Newcomb. 



For an excellent revision of the Eastern American species, see Crandall, 

 No. 27. 



Von Martens (73, p. 368) has proposed the subgenus Alampetis for the 

 North American and Mexican species with a dull, not glossy, surface and 

 (often) thickened lip. He gives no type, but mentions P. ancillaria as an 

 example. 



Physa Ai.BOii"iLATA Ancey. 



Physa albofilata Ancey, in Sampson, Rep. Geol. Surv. Ark., II, 1891. p. 194. 

 Type locahty: West Leatherwood Creek, Eureka Springs, Carroll Co., Ark. 

 See gyrina. 



Physa altonensis Lea. 



Physa altonensis Lea, Pr. A. N. S. P., 1864, p. 114; lour. A. N. S. P., VI, 



1866, p. 164, pi. 24, fig. 82; Obs., XI, 1866, p. 120, pi. 24, fig. ^2. 

 Type locality : Alton, Ills. 



Is elliptica according to Tryon (132, p. 163) and an abnormal gyrina 

 according to Crandall (27, p. 71). 



