102 Bryant WaIvKEr 



Flanorbis orbiculus Morelet. 



Planorhis orhiculiis Morelet, Test. Noviss., 1849, I» P- ^7- 



Includes haldeviani Ditnker (1850) non haldemani C. B. Adams (1849;, 

 Fischer and Crosse also include liebmanni, but Pilsbry (1. c.) considers it 

 to be distinct. 



Planorbis oregonensis Tryon. 



Planorhis orcgoncnsis Tryon, Am. J. of Con., I, 1865, p. 231, pi. 22, fig. I7. 

 Type locality : Pueblo Valley, Oregon. See trivolvis. 



Planorris parvus Say. 



Includes biUingsii Lea according to Vanatta (136, p. 54) and Dall (32, 

 p. 95) and ci)'cumstriatus Tryon according to Vanatta (1. c). 



Planorbis parvus walkeri \^anatta. 



Planorhis pannis zvalkeri Vanatta, Naut., XVI, 1902, p. 58. 

 Type locality: Hartland, Vt. Also Michigan. 



Plaxorbts perForatus "Gould?" Sowerby. 



Planorhis pcrforatus Sowerby, Con. Icon., Planorbis, 1876, Sp. 105, pi. 



13, fig. 105. 

 Type locality : United States. 



Gould never described a Planorbis under this name. Clessin (20, p. 

 227) suggests that the species is perhaps from East Asia. 



Planorbis pi.anulatus Cooper. 



Is doubtfully referred to P. opcrcnlaris Gld. as a variety by Cooper (25, 

 p. 100). 



Peanorbis peExata Ingersoll. 



Planorbis plcxala Ingersoll, U. S. Geol. & Geog. Surv. Terr., 1874, p. 402, 



text-fig. 

 Type locality : St. Mary's Lake, Antelope Co., Col. 



Is a var. of trivolvis according to Stearns (121, p. 105) and Cooper 

 (26, p. 85). 



Peanorbis rubEEEUS Sterki. 



Planorbis harni Pilsbry, Naut., IV, 1891, p. 137, sine dcsc. 



Planorhis exacntus rnhcllus Sterki, L. and F. W. AIoll., New Phila., 189-], 



p. 7- 

 Planorhis rubcUns, Pilsbry, Naut., XIII, 1899, p. 51. 



Type locality : Stone Creek Valley, Odbert's Station, O, 



