NERITINA. 



Plate XIII. 



Species 59. (Fig. a, b, Mus. Cuming.) 



Neritina Oivexiana. Ner. tedCi cotwexo-depressd, (niid- 

 ciilci, lad} exjjausci, spira pand, vie exsertd, aiifrnclihns 

 convexis, lavihm, area columellari permupld, luhro ili- 

 latato, suhauriculalo ; paUitJe fahd, oUmcco-ulr/ro re- 

 ticulatd, area colmneUari carneUo-carided. 



Owen's Neritina. Shell convexly depressed, ratbcr 

 thin, broadly expanded, spire small, scarcely exserted, 

 whorls convex, smooth, colnmellar area very large. Up 

 broadly dilated, subanriculated ; pale fulvous, reticu- 

 lated with olive-black, columellar area carnelion-bluc. 



Gk.\y, Wood, Index Testaoeologicus, Supp. f. S. 



Hub. Fernando Po (on stones in small streams) ; F)-azer. 



A depressly convex species, with a fine expanded slightly 

 auriculated lip. 



Species 60. (Fig. a, b, Mus. Cuming.) 



Neritina cauiosa. Ner. testa angriste globosd, nlriiiqiif 

 conspicue dilatatd, spird siibverticali, inlortd, aiifrac- 

 tibita convexis, sulirnr/osis, area columeUarl perumpld, 

 aperturd parvd, lahro expauso ; caruleo-nigrd, piniclis 

 ulbidis aspersd. 



The worm-eaten Neritina. Shell narrowly globose, 

 conspicuously dilated on each side, spire subvertical, 

 turned in, whorls convex, subrugose, columellar area 

 very large, aperture small, lip expanded ; blue-black, 

 sprinkled with white dots. 



Gray, Wood, Index Testaceologicus, Supp. f. 0. 

 Nerita NiittaUi, Recluz. 



Uab. Sandwich Islands (on stones in rivulets) ; Nuttall. 



Convoluted in an obliciucly vortical manner, with the 

 sides prominently dilated. 



Species 61. (Fig. a, b, Mus. Cuming.) 

 Neritina vespertina. Ner. testd depressissimd, utriii- 

 que late alatd, tenia, spird oblique verticali, obi/isd, 

 radiatim striata, ared columellari perampld, aperturd 

 parvd ; limdo-olicaeed, subcorned. 



The siJN-SET Neritina. Shell very depressed, broadly 

 winged on each side, thiu, sjiire oblicpiely vertical, 

 obtuse, radiately striated, columellar area very large, 

 aperture small ; livid-obve, subearneous. 



Nuttal),, Jay's Catalogue of Shells, p. 66 



Hab. Sandwich Is' 



(on stones in small 



Nuttall. 

 A remarkably wi 

 abstance. 



1 species, of thin subcorneous 



Species ()2, (Fig. a, b, Mus. Cuming.) 



Nerita Taiiitensis. Ner. testd depresso-ovatd, siibniiri- 

 cidatd, spird obliqiii verticali, obtusd, radiatim Minute 

 striatd, ared columdlari perampld, leoiter concexd ; 

 nlyrieante-olivarcd. 



The Tahiti Neritina. Shell depressly ovate, subauri- 

 cidated, spire obliquely vertical, obtuse, radiately mi- 

 nutely striated, columeUar area very large, slightly 

 convex ; blackish-olive. 



Lesson, Sowerby, Thesaurus Conch, part 10. p. ."jii'.i. 



Hah. Sandwich Ishmds (on stones iu a small stnani) ; 

 Nuttall. 



An oblong-ovatc species, sipiarely 

 spire. 



jlatcd 



Species 63. (Fig. a, h, Mus. Cuming.) 



Neritina cornuta. Ner. testa ovatd, spird ohliqni: in- 

 tortd, anfraetibtts rotundatis, ad sutiiras pecidiariter 

 coHcavo-carinatis, ared columellari lata, superne si- 

 nuatd ; olicaceo-fulcesceute, nigro sparsim reticulata, 

 intus Ucido-pluiiibed, carnelio marginatd. 



The horned Neritina. Shell ovate, spin- obliquely 

 turned in, whorls rounded, peculiarly eoncavely 

 keeled at the sutures, columellar area broad, sinuated 

 at the upper part ; pale olive-fulvous, sparingly reti- 

 culated with black, interior livid-lead, edged with 

 carneliou. 



Hab. Philippine Islands. 



Distinguished by a peculiar eoncavely keeled appeudagi' 



next the suture. 



November, lS.5c 



