io6 Bryant Walker 



Genus CARINIFEX W. G. Binney, 1863. 



Megastropha Lea, 1866 



Carinifex newberryi minor Cooper. 



Carnifex neivberryi var. ? viiiior Cooper, Pr. Cal. Acad. Sci., IV, 1870, p. ()8. 

 Type locality not stated. 



CariniEEx ponsonbyi E. a. Smith. 



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

 Plnncrbis 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^E. 

 Genus PHYSA Draparnaud. 

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



Section physa s. s. 



Type P. fontinalis L. 



Section costatella Dall. 



Type P. cosiata Newcomb. 



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

 No. 27. 



Von ]\Iartens {'/2>, 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. ancilla>i'a as an 

 example. 



Physa aeboeilata Ancey. 



Physa albofilofa Ancey, in Sampson. Rep. Geol. Surv. Ark.. II, 189 r, p. 194. 

 Type locality: 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., XL 1866, p. 120, pi. 24, fig. '^2. 

 Type locality : Alton, Ills. 



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

 according to Crandall {2y, p. 71). 



