128 Bryant Wai^kdr 



CamPELOMA INTEGRUM (Say). 



Is a valid species and quite distinct from decisujn. 



CampEtoma integrum obesum ("Lewis" Tryon). 



f Paludina obesa "Lewis" W. G. Binney, L. and F. W. Shells, III, 1865, p. 



47, fig- 95- 

 Melantho obesa Lewis, Am. J. of Con., IV, 1868, p. 134. 

 Melantho obesus Lewis, Pr. A. N. S. P., 1875, p. 336, pi. XXIII, figs. 4-5. 

 Viznpara obesa "Lewis" Tryon, Mon., 1870, p. 25, pi. 13, fig. 6. 

 Type locality : Ohio Canal, Columbus, O., and Michigan. 



Tryon seems to have been the first to have formally described this well 

 marked form, although Lewis had already referred to it by that name in 

 his papers on Melantho in 1868 and 1869. Binney figured what he supposed 

 to be it, but Lewis seems to think (1. c.) that he did not do so. Binney 

 states that "Paludina obesa" is preoccupied, but I have not been able to check 

 the reference. If that is true and Binney's figure represents the true obesa 

 of Lewis, his remarks and figure are sufficient to fix that name on the form 

 and conseauently it would have to receive a new name. 



Typically very distinct, this form seems to bear the same relation to 

 integrum that gibbwn does to rufum. 



Call's statement (17, p. 135) that Lewis' tvpe of this form is the male 

 and the type of his undescribed fecnnda the female of the same species is 

 an error. 



Campeloma lEwisii Walker. 



Cariipelonia lewisii Walker, Naut., XVIII, 191 5, p. 126, pi. V, fig. 3. 



Type locality : Yallabusha River, Grenada, Miss. 



This is the Melantho coarctata of W. G. Binney. For full synonymy see 

 Walker, 154, p. 126. 



Campeloma ijmum (Anthony). 



According to Pilsbry (103, p. 43) Melantho decampii W. G. Binn. is a 

 synonym of this species, which has been very generally misunderstood. 'I he 

 Florida form usually known by this name is C. ftoridense Call. 



Campeloma milesii (Lea). 



Is apparently a valid species. If not, it should be referred to decisiim 

 rather than to snbsolidnm. See Walker, 146, p. 121. 



Campeloma ponderosum coarctatum (Lea). 



This is the Paludina coarctata and P. incrassata of Lea and the Vivipara 

 nolani of Tryon. 



For full synonymy see Walker, 154, p. 125. 



Campeloma ruEum (Haldeman). 



Is a valid species. j 



