NERITINA. 



Plate XXI. 



Species 91. (Fig. a, b, c, Mus. Cuming.) 

 Neeitina pulchella. Ner. testa suhglobosa, spird ob- 

 tuse planntd, mifractibm convexk, nunc lavibns, nunc 

 plicato-siriatis, area columellari subangusid, declivi; 

 luiescente -rosed, caruleo-niffro, punctis internipio, 

 tinctd ml fasciatd. 

 The peetty Neritina. Shell subglobose, spire obtusely 

 flattened, whorls convex, sometimes smooth, some- 

 times plicately striated, columellar area rather nar- 

 row, slanting ; yellowish-rose, variously stained or 

 banded with blue-black, interrupted with dots. 

 Hub. Island of Luzon, Philippines (on stones iu a small 

 stream) ; Cuming. 



A small globose shell, variably painted, very much re- 

 sembling N.faha, but wanting the depression which cha- 

 racterizes the upper portion of the whorls of that species. 



Species 92. (Fig. a to d, Mus. Cuming.) 

 Neritina virginea. Ner. testa oblique eonoided, swb- 

 globosd, spird parvd, subobtusd, anfraclibns siiperm 

 declivibus, lavibus, nitidis, aperturd parvd, area co- 

 lumellari percallosd ; albidd vel pallide grised, nigri- 

 cante-griseo plus minus reliculatd, interdimi rosacea. I 

 The virgin Neritina. Shell obliquely conoid, sub- 

 globose, spire smaU, rather obtuse, whorls slanting j 



round the upper part, smooth, shining, aperture 

 small, columellar area very callous ; whitish or grey, 

 more or less reticulated with blackish-grey, some- 

 times tinged with rose. 



Lamarck, Anim. sans vert. vol. viii. p. 575. 

 Neritina; Brasiliana and Leucliii, Eecluz. 



Hab. AVest Indies. 



Of a pecidiar grey reticulated pattern, the network being 

 sometimes broken up into oblique irregular bands. 



Species 93. (Fig. a, b, c, Mus. Cuming.) 



Neritina pupa. Ner. tesfd subobliqtie globosd, spird pa- 

 rum exsertd, anfractibus convexis, lavibns, ared colu- 

 mellari plaiio-declivi ; alba, cceruleo-nigro plus minus 

 confertim strigatd vel reticulata. 



The pupa Neritina. Shell somewhat obliquely globose, 

 spire but little exserted, whorls convex, smooth, co- 

 lumellar area flatly slanting, white, more or less 

 closely striped, or reticulated with blue-black. 



Neritapupa, Linnaeus, Syst. Nat. 12th edit. p. 1353. 



IIuL. Jamaica. 



A globose species, convoluted somewhat obliquely, re- 

 ticulated or striped with blue-black, varying more or less 

 iu the closeness of the pattern. 



November, 185 



