Catai^oguk Recently Described Moeeusca 113 



PiiYSA oscuEANS Haldcman. 



Includes incxicana Phil, according to Fischer and Crosse (38, p. 100), 

 Pilsbry (91, p. 323) and von Martens (73, p. 370). "Physa osciila^is is 

 readily distinguishable from the eastern forms, P. heterostropha, intcgra 

 and gyrina; but several described Californian Physas present no differences; 

 from the IN'Iexican species and must be considered synonyms." (Pilsbry, 1. c.) 



Physa parva Lea. 



Physa parva Lea, Pr. A. N. S. P., 1864, p. 115; Jour. A. N. S. P., VL 1866, 



p. 177, pi. 24, hg. 104; Obs., XI, 1866, p. 133, pi. 24, fig 104. 

 Type locality: Verdigris River and Roca Creek, Kans. 



Is doubtfully referred to P. inallcata Try. as a variety by Cooper (25, 



p. 97)- 



Probably a young grosvcrnori, Tryon (128, p. 169) ; is gyrina, Tryon 

 (132, p. 162) ; probably a young anatiiia, Crandall (27, p. 71). 



Physa politissima Tryon. 



Physa politissiiv.a Tryon, Am. I. of Con., I, 1865, p. 226, pi. 23, f\g. 13. 

 Type locality : Sacramento, Cal. 



Is a variety of P. biuneyaua Ancey (P. diaphaiia Try.) according to 

 Cooper (25, p. 97). 



Is probably a synonym of frificca, and both are "dwarfed and arrested 

 aspect (s)" of gyrina according to Stearns (122, p. 51). 



Physa pomtlia Conrad. 



Physa pomilia Conrad, Am. J. of Sci., XXV, 1834, p. 343; Am. ]. of Con., 



II, 1866, p. 278. pi. 15, figs. 1-3. 

 Type locality: Randon's Creek, Claiborne, Ala. 



Includes sJw7caltrri Lea according to Tryon (132, p. 162) and Crandall 

 (27, p. 90). 



Physa primEana Tryon. 



PJiVsa priiucana Tryon, Am. I. of Con., I, 1865, p. 227, pi. 23, fig. 12. 

 Type locality: Long Island, N. Y. 



Is hctcrnstropJia according to Crandall (27. p. 29). 



Physa propinoua Tryon. 



Physa propinqua Tryon, Am. J. of Con., I, 1865, p. 223, pi. 23, fig. 5. 

 Type locality : Jordan Creek, Idaho. 



Physa rivalis Sowerby. 



Physa rivalis Sowerby, Con. Icon., Physa, 1873, Sp. 31, pi. 4, fig. 31. 

 Type locality: Columbia River. 



This is not the P. rivalis of Maton and Rackett (1807) nor of Sowerby 

 (1821-6). Clessin (20, p. 331) considers it a synonym of hildrethiana Lea. 



