2ai 



Var. flavescens fa.sciis dunbus nigris. 

 Hab. ad Real Liejos, in fluvio, rupibus adhaerens. 

 A very curious species, probably the analogue of Strombus latissimus 

 among the river shells. — W. J. B. 



Nekitina DII.ATATA. NeT. testd ovato-tTuncald, dorso convexo, 

 albido-fuscd lineis nigris angulatis reticulatd ; spird obliąuiin- 

 curvd ; labro lenui supernl sub-biauriculato ; labio subarcuato, 

 denticulato: long. f, lai. i'-^poll. 



Hab, ad insulam Taheiten in rivis, sa.sis adhserens. 



A species approaching Ner. auriculata, Lam., but verv distinct 

 frora it.— W. J. B. 



Nekitina globosa. Ner. testd globosd, Jlavescente vel fascd, 

 cuasi guttatd, guttarum Unibis nigricantibus ; labio subrugoso, 

 denticulato : long. 1 , lat. 1 poli. 



Hab. ad Chiriąui Colonibiae Occidentalis in fluvio. — W. J. B. 



Neritina Nux. Ner. testd ovato-globosd, fuscd, longitudinaliter 

 striatd, striis creberrimis ; labio serrato, unidenticulato : long. į, 

 lat. į poli. 



Hab. ad insulam Taheiten in rivis, saxis adhaerens. — W. J. B. 



Neritina intermedia. Ner. testd suborbiculari, olivaceo.fuscd, 

 nigro reticulatd; dorso subgibboso, lahio eitertio intūs l<evi, albi- 

 cante ; columellari subjlavo, planulato, margine centrali rugulosd : 

 long. 075, lat. OSo poli. 

 Hab. in America Centrali. 



Found abundantly on stones in a mountain stream in the Isle of 

 Lions, Bay of Montejo. It bears a distant resemblance to Ner. pulli- 

 gera. A smaller variety occurs in a rivulet at San Lucas in the Gulf 

 of Nocoiya.— G. B. S, 



Neritina chlorostoma. Ner. testd suborbiculari, ellipticd, oti. 



vaceo-fuscd, nigro reticulatd, subfasciatd ; aperturd intiisjlavd ; 



labii columellaris margine obtusi unidentatd, rugulosd : long, 0-5, 



lat. 0'55 poli, 

 Hnb. ad Insulam Taheiten. 

 Found on stones in therivulets. — G. B. S. 



Neritina pigta. Ner. testd subglobosd, cinerascente, maculis, 

 sphacelisy vittisgue diversimodo pictd ; labio interno castaneo : 

 long. 0'5, lat. O-i poli. 



Hab. ad Panamam. 



Found in abundance on a mud-bank partially overfIowed with 

 fresh water.— G. B, S. 



Neritina reticulata. Ner. testd subovali, transversim striatd, 

 aterrimd, albo reticulatd et maculatd; aperturd omnino lutescente : 

 long. 0-45, lat. 0-48 poli, 



Hab, ad Insulas Polynesias. 



From Lord Hood's Island ; found in fine sand on the reefs, oc- 

 casionally overflovved. — G. B. S. 



Neritina Morio. Ner. testd subovali, transversim striatd, atrd ; 



