Catai.ogui; RE;cE;NTr,Y Described Mollusca ioi 



Planorbis eentus Say. 



Fischer and Crosse (38, p. 65) restrict this species to the New Orleans 

 form described by Say and do not consider that the figures given by Gould, 

 Haldeman, Dunker and others represent the species. Dall (32, p. 86) 

 refers it to glahratns. 



PivANORBis LiEBMANNi Dunker. 



Is referred to orbicuhts by Fischer and Crosse (38, p. 71), but is stated 

 by Pilsbry (91, p. 322) to be distinct. It is the type of section Tropicor- 

 bis Brown and Pilsbry. 



PivANORBIS MAGNIFICUS Pilsbry. 



Planorbis viagnificns Pilsbry, Naut., 1903, XVII, p. 75 ; Bartsch, Pr. U. S. 



Nat. Mus., XXXIII, 1908, p. 697, pi. 57, figs. 7-9. 

 Type locality: Cape Fear River, Wilmington, N. C 



Panorbis multivolvis Case. 



Is a valid species and has been rediscovered at Howe Lake, Marquette 

 Co., Mich. See Walker, 149, p. 61. Earlier citations of this species from 

 Michigan, except the original one, and Newfoundland refer to P. cam- 

 pamilatus riidentis. 



Planorbis nathorsti Westerlund. 



Planorbis nathorsti Westerlund, Vega Exp., IV, 1887, p. 168. 

 Type locality : Aulatsivik, West Greenland. 



Planorbis occidentalis Cooper. 



Planorbis occidentalis Cooper, Pr. Cal. Acad. Sci., IV, 1870, p. 99. 

 Type locality : Not given. Range : Washington Terr, to San Jose, Cal. 



See trivolvis. Is the mature form of tnmens according to Cooper (26, 

 p. 89). 



Planorbis oplrcularis Gould. 



Planorbis lenticiilaris Sowerby, Con. Icon., Planorbis, 1876, Sp. no, pi. 13, 

 fig. no. 

 Includes plannlatus Cooper, centervillensis Tryon and imtltilinea-tus Van. 

 {oregonensis Van.) as varieties according to Dall (32, p. 92), with callio- 

 glyptus Van. as a synonym of plannlatus. 



Planorbis opercularis multilineatus Vanatta. 



Planorbis opercularis oregonensis Vanatta, Naut., IX, 1895, p. 54; non 



Tryon, 1865. 

 Planorbis opercularis niultilineatits Vanatta, Naut., XIII, 1899, p. 48. 

 Type locality : Salem and Portland, Oregon. 



