126 Bryant Walker 



young of intertextus are strongly angulated and those of V. viviparus are 

 quite acutely carinated the distinction does not seem to be well taken. If, 

 however, for any valid reason, it should be found desirable hereafter to 

 separate the two groups, the name will be available. 



ViviPARA LiNEATA (Valenciennes). 



W. G. Binney (13, p. 295) from an examination of the type states that 

 this is the V. bengalensis (Lam.) from India. 



Viviparus mai,i.katus Reeve. 



This Japanese species has been introduced into a number of localities 

 on the Pacific coast and has been listed under various names : — 

 Paludina japonka Wood, Naut., V, 1892, p. 114; Ibid, VI, 1892, p. 51. 

 Vivipara stelmaphora Stearns, Naut., XV, 1901, p. 91. 

 Vivipara lecythoides Hannibal, Naut., XXII, 1908, p. 33. 

 Viviparus malleatits Hannibal, Naut., XXV, 1911, p. 31. 



Hannibal (53, p. 194) has made this species the type of a new subgenus, 

 Cipango paludina, which he refers to Idiopoma Pils., (98, p. 189) originally 

 proposed as a subgenus, but which he raises to generic rank. As the vahd- 

 ity of both of these changes must be ultimately determined by a study of the 

 Asiatic species, they may well be held in abeyance until that has been done. 



Viviparus japonicus v. Martens. 



This species has been introduced into British Columbia (Pilsbry and 

 Johnson, no, p. 144) and Cahfornia (Hannibal, 52, p. 32). 



It has also recently appeared in the Muddy River, Brookline, Mass. 

 (Johnson, 60, p. 35 and 61, p. 48). 



Hannibal (53, p. 194) refers it to Idiopoma Pils. 



Vivapara mui.ticarinata (Haldeman). 



This name was proposed by Haldeman for the Paludina carinata Val., 

 which was erroneously stated by the author to be from Mexico, carinata 

 having already been used by Swainson for an Indian species of the same 

 genus. W. G. Binney (12, p. 430), states that the types in the Jardin des 

 Plantes, Paris, are labelled in Valenciennes' handwriting "Philippines." It 

 is undoubtedly a form of ['. burroughianus'hea.. 



Viviparus walkkri Pilsbry and Johnson. 



Viviparus walkeri Pilsbry and Johnson, Naut., XXVI, 1912, p. 48, pi. XXX, 



figs. 6-7. 

 Type locality: Juniper Creek, Lake Co., Fla. 



