NERITINA. 



Plate XXX. 



Species lo-i. (Fig. 134' and 135, Mus. Cuiniug.) 



Neuitina glabeata. Ner. testa obliqtie ovatd, soUdd, 

 ■ipird obtusd, anfractihus convexis, Itsvibiis, niteidihus, 

 area columellari dense callosd, aperttird niimdd; hi- 

 tescente-albd, nigro fasciatd vel varie lineatd. 



The smooth Neritina. Shell obliquely ovate, solid, 

 spire obtuse, whorls convex, smooth, shiniug, colu- 

 mellar area thickly callous, aperture very small ; yel- 

 lowish-white, banded or variously lineated with black. 



SowERBY, Thesaurus Conch, part 10. p. 535. pi. 116. f. 

 356-363. 



I lab. ? 



A beautifully polished, callous, pea-like shell, variously 

 t'licii'cled with black bauds or lines. 



136. (Fig. a, b, iVIus. Cuming.) 



Nebitina Desmoulinsii. Ner. testd depressi orbicit- 

 lari, spird obtuse plamtd, jjliis minus erosd, anfracti- 

 hus convexis, lavibiis, ared cotmuellari subangustd, de- 

 dim, aperturd ampld, rotnndato-expamd ; carlonario- 

 nigra. 



Desmoulins' Neritina. Shell depressly orbicular, spire 

 obtusely flattened, more or less eroded, whorls convex, 

 smooth, columellar area rather narrow, slanting, aper- 

 ture large, rotundately expanded; coal-black. 



Recluz, MS., Mus. Cuming. 



Hab. Tahiti. 



Distinguished chiefly by its depressed rotundately ex- 

 panded aperture. 



Species 137. (Fig. «, b, Mus. Cuming.) 



Neritina lutesta. Ner. testd ovatd, tenuiculd, spird 

 subexsertd, anfractihus convexis, concentrice -itriatis, 

 ared columellari declivi, aperturd subexpansd ; sordide 

 fulod, rufo-fiiscescente obscure tessellatd. 



The soiled Neritina. Shell ovate, rather thin, spire 

 moderately cxsorted, whorls convex, concentrically 

 striated, columellar area slanting, aperture slightly 

 expanded ; dull fulvous, obscurely tessellated with 

 red-browu. 



Mouelet, MS., Mus. Cuming. 



Hab. Portugal. 



A thin, dull-looking species, almost of the texture of a 

 Lyiinuea, but nevertheless prettily variegated with rudily 



Species 138. (Pig. r^ b, Mus. Cuming.) 



Neritina Afbicana. Ner. testd sttborbicutari, spird 

 parrd, vix exsertd, anfraclibiis plam-convexis, area 

 columellari subangustd, declioi; sordide nlbd, liueis 

 uigricantibus eximiisjlexuosis iuterrupiis nofafd. 



The African Neritina. Shell suborbicular, spire small, 

 scarcely exserted, whorls flatly convex, columellar 

 area rather narrow, slanting ; dull white, marked with 

 delicate interrupted black flexuous lines. 



Ilah. Africa. 



A small, rather compressly convoluted species, markeil 



with characteristic faintly pencilled blackish flexuous lines, 



more or less interrupted. 



January, 1S56. 



