NERITINA. 



Species T-t. (Fig. a, b, Mus. Cuming.) 



Neritina Turton'I. Ner. tmtd globoio-conoiilm, soUJil, 

 spim suhproiii;,iiih1, ohtiisa, aiifnictihiis fnqjerne levUcr 

 nmniris, ih-iiiile r<,t:i,i,h,l,s, l,rri/,i!.^, ami roliiwelhin 

 ■HHlirnifjiiata, adlom, hianj'iur i.iiiiiil? daitiviihilil ; hrun- 

 neo-ltitesceute, niyro lonijUiiiVinaliiL'r hdidr'ujnti'i, ami 

 colamellari carneold. 



Tuiiton's Neritina. Shell globosi'ly conoid, solid, spire 

 rather prominent, obtuse, wliorls slightly concave on 

 tlie upper part, then rounded, smooth, columellar 

 area rather narrow, callous, minutely toothed at the 

 edge ; brownish-yellow, longitudinally broadly striped 

 with black, columellar area carnelion. 



SowEEBY, Thesaurus Conch, part 10. p. 530. 



Hah. New Ireland ; Hinds. 



A dark solid brownish-yellow conoid shell, longitudi- 

 nally painted with broad waved black stripes. 



Species 75. (Fig. a, 4, Mus. Cuming.) 

 Nehitina Natalensis. Ner. testa (jloboso-conoided, spird 

 .vdqjrominuld, obfnsd, anfractibus sitperiie coucavo-de- 

 idivibiis, deinde coiivexis, Itevibus, area colnniellari siib- 

 unfjmtd ; fnlvo-olwaced, nigra oblupii strigatd. 

 The Natal Neritina. SheU globosely conoid, spire 

 rather prominent, obtuse, whorls concavely slanting 

 round the upper part, then convex, smooth, colu- 

 mellar area rather narrow ; fulvous-olive, obliquely 

 streaked with black. 

 Hah. Natal. 



Of a more slantingly convoluted form than the preced- 

 ing species, with the black stripes narrower and ranging 

 obliquely in a contrary direction. 



Species 7(). (Fig. a, h, Mus. Cuming.) 

 Nekitina Powisiana. Ner. testa trausmrsi ovatd, de- 

 pressd, spird oblique intortd, anfractibus subangustis, 

 concentrice siriatis, area cobimellari lata, juxta apicem 

 in sinu productd; oUvaceo-luted, purpurascente fas- 

 ciatd, fasciis nigris iuterrvptis marmoratd. 

 Powis's Neritina. Shell transversely ovate, depressed, 



spire obliquely turned in, whorls rather narrow, con- 

 centrically striated, columellar area broad, produced 

 into a sinus next the apex; olive-yellow, faintly 

 banded with purple, and mottled with interrupted 

 black bauds. 



Eecluz, Sowcrljy, Thesaurus Coneh. part 10. p. 511. 



Hah. New Ireland (on stones in a mountain stream) ; 

 Hinds. 

 An elevated involuted shell, with the edge of the last 



whorl next the apex produced into a sinuated horn. 



Species 77. (Fig. a, b, Mus. Cuming.) 

 Neritina solidissima. Ner. testd dejiresso-orbiculari, 

 solidd, spird oblique ititortd, anfractihus subaiigustis, 

 versus aperturam expansis, striis iinpressis spiraUbus 

 sculptis, area columellari subcallosd ; carbonario-atrd, 

 punctis minutis albis aspersd. 

 The very solib Neritina. Shell depressly orbicular, 

 solid, spire obliquely turned in, whorls rather narrow, 

 expanded towards the aperture, engraved with spiral 

 impressed strise, columellar area rather callous ; coal- 

 black, sprinkled with minute white dots. 

 SowERBY, Thesaurus Conch, part 10. p. 511. 



IM. ? 



A very characteristic species, round and expanded in 

 form, engraved with spiral impressed striae ; deep coal- 

 black, sprinkled with minute white specks. 



Species 78. (Fig. a, b, Mus. Cuming.) 



Neritina ateuiiima. Ner. testd globoso-conoided, spird 

 siibiirdiiiiiiiilii, anfractibus superne concavis, dciude ro- 

 tiindalis, lrcrihiis,ared columellari angustd ; atcrrimd, 

 intus carulesceute-albd . 



The very black Neritina. Shell globosely conoid, 

 spire rather prominent, whorls concave round i\u- 

 upper part, then rounded, smooth, columellar area 

 narrow ; deep black, bluish-white within. 



Kocii, Philippi, Abbild. und Bescli. Conch, pi. 1. f 11. 



Hab. ? 



Of a simple globosely conoid form, deep black, withoul 



indication of any pattern. 



November, 1855. 



