256 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



having been described. If it bad, it would supersede Anipullaria La- 

 marck, with wliich it was intended to be coextensive. As a subgenus 

 of Ampnllaria^ for those species with a purely horny operculum, it 

 might be retained, but in that case should be credited to H. and A. 

 Adams, who flr.st defined it. 



Vivipara georgiana Lea. Plate 17, figs. 2, .3. 



Fahtdina georgiana Lea, Trans. Am. Phil. Soc, v, p. 116, -pi. xis, fig. 85, 1837. 

 Pahidina wareana Shnttleworth. 

 Vivipara georgiava Biuney, 1. c, p. 27. 



Abundant in the mounds of the Saint John's Eiver region. Living in 

 Lake Monroe, Milner ; Lake Ware, Rugel ; reaching north to South 

 Carolina and west to Alabama, Binney. 



It has been stated that this species is not viviparous, which is per- 

 haps due to the confusion of the ova of some other mollusk with those 

 of this species. The fact should be determined by some resident of 

 Florida, if i)ossible in an aquarium, which would settle the matter. I 

 note considerable variation in the form of the mound specimens. 



? Campeloma lima Anthouy. Plate 17, fig. 1. 



raJtulina lima Anthouy. Proc. Acad. Nat. Sci. Phila., 1860, p. 70 ;=3Mantho 

 coarctafa Lea teste Binuey. 



A beautiful shell, strongly marked with revolving strife, dark olive 

 outside, dark and livid inside, with the whorl appressed toward, but 

 not at, the suture, was sent to the Museum by Professor Wetherby 

 from Indian Eiver and Miami, Fla. It appears to resemble Anthony's 

 Paludina lima^ and is provisionally referred to that species. Binney's 

 figure of P. Uma does not agree well with the description given by Mr. 

 Anthony, and the failure of eyesight with which the latter naturalist 

 ■was afflicted may have led to some error in forwarding a type for figur- 

 ing. This species is peculiar, as far as I have seen, in its depth of 

 color iind livid interior. 



The name Melantho was applied by Bowdich to a marine fossil from, 

 the Paris basin, perhaps a Lunatla or Amauropsis. It has nothing to 

 do with the group named by Rafinesque Campeloma. The identity of 

 C. lima with C. codrciata Lea is suggested by Mr. Binney, but I pre- 

 fer to leave that an open question for the present. My remarks apply 

 only to Anthony's description. 



Bythinella nionroensis Dall. Plate 17, fig. 9. 



1 Hydrohia monroeiisis Franeufeld, Yerh. K. K. Zool.-hot. ges. Wien, Apr., 

 1863, p. 1023. 



Shell moderately strong, greenish or brownish, smooth and polished, 

 but usually overlaid with a dull dark brown unpolished deposit; the 

 interior of the mouth whitish ; the margin of the aperture nearly black 

 at the extreme edge, not sharp nor much thickened, not reflected ; the 

 ])eristome complete, just touching the body whorl in the adult, adherent 

 in the young; whorls five or six, rounded, smooth or lightly transverBely 

 striate, anterior part of peristome slightly projecting, outer posterior 



