P ALUDIN A. 



Plate X. 



Species 58. (Mus. Cuming.) 



Paludina variata. Pal. testa ovato-conicd, sordide 

 olivaceS, anfractibits rotundatis, sulaiif/nstis, superne 

 subimpressis, striis sericeis undulatis coiifertim decus- 

 satis ; apertwrd parviusculd, ovatd. 



The varied Paludina. Shell ovately conical, dull- 

 olive, whorls rounded, rather narrow, faintly impressed 

 round the upper part, closely decussated with waved 

 silken striae ; aperture rather small, ovate. 



Vlvipara variata, Frauenfeld, Ueber die Gattung Vwipara, 

 November, 1862. 



Hab. Pondicherry, 



Of very simple character, known to me only by a single 

 specimen received from M. Frauenfeld. 



Species 59. (Mus. Cuming.) 



Paludina nitens. Pal, testa conico-ovatd, virescente- 

 olivaced, uitente, aiifractibus decl'wi-coiivexis, minute 

 decussatim striatis, inferiie angnlatis, niigido in aiifracin 

 ultimo evanido ; aperturd ovatd. 



The shining Paludina. Shell conically ovate, green- 

 ish-olive, shining, whorls slopingly convex, minutely 

 decussately striated, angled at the lower part, angle 

 in the last whorl fading away ; aperture ovate. 



Hab. Japan. 



A minutely-sculptured shining olive shell, obscurely 



angled around a small umbilicus. 



Species 60. (Mus. Cuming.) 



Paludina .ethiops. Pal. testa globoso-ovaid, subci/lin- 

 draced, tenni, semipellucidd, vii'escenfe-olivaced, anfrac- 

 tihus ohtnse convexis, tmdique minnti striatis et mal- 

 leatis, aiifractu ultimo inferne e.vililer angulato ; aper- 

 turd pyriformi-ovatd, labro nitente-nigro. 



The negro Paludina. Shell globosely ovate, subcy- 

 lindrical, thin, scmitransparent, greenish-olive, whorls 

 obtusely convex, minutely striated and malleated 

 throughout, last whorl finely angled round the lower 

 part ; aperture pyriformly ovate, lip shining-black. 



Hab. Central Africa. 



An interesting scmitransparent dark-green shell, with a 

 conspicuous shining-black lip, of a subcylindrical pupoid 

 form. 



Pig. 61. (Mus. Cuming.) 



This shell proves to be a variety of Swainson's P. curi- 

 nata, described in the preceding Plate, with a conspicuous 

 shining-black lip. 



Species 63. (Mus. Frauenfeld.) 



Paludina formosula. Pal. testa obeso-ovaid, sordide 

 oUvaced, anfraclibus superne riitide declivi-angulatis, 

 deinde plano-convexis, i?iferHe exiliter angulatis, spira- 

 liter grano-striatis, striis subdistantibus, umbilico sub- 

 excavato ; aperturd ovatd. 



The beautiful Paludina. Shell stoutly ovate, dingy- 

 olive, whorls neatly slopingly angled round the upper 

 part, then flatly convex, faintly angled round the 

 lower part, spirally grain-striated, striae rather dis- 

 tant, umbilicus somewhat excavated ; aperture ovate. 



Fivipara formosula, Frauenfeld, Ueber die Gattung Vivi- 

 pai-a, November, 1862. 



Hal). ? 



Chiefly distinguished from P. Javaiiica by its more an- 

 gular form and more widely separated spiral strise. 



Fig. 63. (Mus. Cuming.) 



The specimen here figured appears to be one of the 

 United States species ; probably P. lima. 



Species 6-1. (Mus. Cuming.) 



Paludina fulva. Pal. testd ovato-conicd, solidiusculd, 

 fulvd, anfractibus rotundatis, obscurU minute, decus- 

 satim striatis, nmbilico ohtecto ; aperturd pyriformi- 

 ovatd. 



The fulvous Paludina. Shell ovately conical, rather 

 solid, fidvous, whorls rounded, obscurely minutely 

 decussately striated, umbilicus covered ; aperture py- 

 riformly ovate. 



Hab. Cambojia ; Mouhot. 



Tills shell resembles, in general appearance, the P. cari- 

 nata of Ceylon and Philippine Islands, but there is no 

 keel at the base of the upper whorls, and the striation is 

 different. 



April, 1863. 



