NERITINA. 



Species 158. (Fig. a, i, Mus. Cuming.) 



Neritina Sdccinea. Ner. testa ol)loiigo-ovatd, tenni, 

 pellucidd, spirit parm, anfractibus Itsvidiis, s/ipen/e 

 concavo-planaid, area columellari siibampld ; colore 

 siircineo. 



The Succinea Neritina. Shell obloiig-ovate, thin, 

 transparent, spire small, whorls smooth, concavely 

 flattened at the upper part, eoluraellar area rather 

 large ; amber colour. 



Recluz, Revue Zool. See. Cuvierienne, 18+1, p. 343. 



Hab. Guadaloupe. 



A small, transparent, Succiuea-like species, resembling 

 X. fliimntllis in form. 



Species 159. (Fig. a, b, Mus. Cuming.) 



Neritina Peloponnesa. Ner. testa augusti ovatd, spird 

 subnmpM, phm inuim erosd, anfractibus convexis, con- 

 centrice a/rifi/ist, area columellari .inhanipld ; nitenfe 

 alrd. 



The Pelopoxnesian Neritina. Shell narrowly ovate, 

 spire rather large, more or less eroded, whorls convex, 

 concentrically striated, columellar area rather large; 

 shining black. 



Recluz, MS., Mus. Cuming. 



Hah. The Morea. 



Distinguished from N. Jiiwiatili^ by its spiral plan of 

 convolution and concentric strife. 



Species 160. (Fig. o, h, Mus. Cuming.) 

 Neritina lugubris. Ner. testd ovatd, spird parvd, 

 appressd, anfractibus angiistis, versus aperturam e.v- 

 paiisis, area columellari lata; nitente caruleo-nigrd. 

 The mourning Neritina. Shell ovate, spire small, 



appressed, whorls narrow, expanded towards the 

 aperture, columellar area broad ; shining blue-black. 



Philippi, Abbild. und Besch. Conch, pi. 1. f. 9. 



Hab. Sandwich Islands. 



A shining black species, with a rather expanding aper- 

 ture. 



Species 161. (Fig. o, b, Mus. Cuming.) 



Neritina siderea. Ner. testa ovato-turhinatd, spird 

 subexsertd, anfraclibns convexis, stiperne leviter im- 

 pressis, lavibus, area columellari deelivi ; nitente atrd. 



The shining Neritina. Shell ovately turbinated, spire 

 rather exserted, whorls convex, slightly impressed 

 round the upper part, smooth, columellar area slant- 

 ing ; shining black. 



Gould, MS., Mus. Cuming. 



Hah. Sandwich Islands. 



A smaU, shining black species, 

 spire. 



th a rather turbinated 



Species 163. (Fig. a, h, Mus. Cuming.) 



Neritina ldctuosa. Ner. testd ovato-conicd, spird tur- 

 hinutd, anfractibus convexis, superne leviter coucavis, 

 obscure concentrice striatis, ared columellari deelivi, 

 suhe.rcavatd ; nitente atrd. 



The sad Neritina. Shell ovately conical, spire turbi- 

 nated, whorls convex, slightly concave round the 

 upper part, obscurely concentrically striated, colu- 

 mellar area slanting, subexcavated ; shining black. 



Recluz, Revue Zool. Soc. Cuvierienne, IS-H, p. 317. 



Hah. ? 



A shining black shell, distinguished from t 

 species by its more turbinated conoidal form. 



preceding 



March. 1856. 



