NERITA. 



Species 25. (Tig. a, b, Mus. Cuming.) 



Nerita atramentosa. Ner. testa semiglohosii, crassd, 

 solidd, spird vix exsertd, anfractihns convexis, siiban- 

 gustis, lavibus vel teniie spiraliter striatk, striis siib- 

 midwlatis, labro intics incrassato, dente imico, colu- 

 mella platio-concavd, margine niinuti denticulato ; 

 cceruleo-nigrd, punctk albidis spiraUtei- lentighiosd. 



The inky Nerite. Shell semiglobose, thick, solid, spire 

 scarcely exserted, whorls convex, rather narrow, 

 smooth or finely spirally striated, strife being a little 

 waved, lip thickened inwardly, with a single tooth, 

 columella flatly couoave, minutely toothed at the 

 edge ; blue-black, spirally freckled with white dots. 



Hah. Swan River, Australia ; Bacon. 



A solid blue-black shell, spii-ally striated with slightly 



waved lines of whitish punctures. 



Species 26. (Fig. a, h, Mus. Cuming.) 

 Nerita Hindsii. Ner. testd semiglobosd, solidd, spird 

 vix exsertd, mifractibus subangusiis, spiraliter costatis 

 et s/dcatis, labro intus dentato-lirato, columelld leviter 

 granulatd, margine minute deuticulatd; citiereo-grised, 

 costis nigro et alio promiseue articiilatis, apice lutes- 

 ceiite. 

 Hinds' Nerite. Shell semiglobose, solid, spire scarcely 

 exserted, whorls rather narrow, spirally ribbed and 

 grooved, lip dentately ridged within, columella 

 slightly granulated, miuutely toothed at the edge; 

 ash-grey, ribs promiscuously articulated with black 

 and white, apex yellowish. 

 Recluz, Pro. Zool. Soc. 1843, p. 201. 

 Hah. Island of Panay, Philippines (under stones at low 

 water) ; Cuming. 

 A rather spirally ribbed grey shell, promiscuously ar- 

 ticulated with black and white, the black predominating, 

 with a characteristic yellow apex. 



Species 27. (Fig. a, h, Mus. Cuming.) 

 Nerita histrio. Ner. testd ovato-semiglohosd, crassd, 

 spird concavo-plaud, vix exsertd, anfractihns angustis, 

 obsolete planicostatis, aperturd suheffusd, labro iiUiis 

 teuue denticulato, columelld dense callosd, politd, ob- 

 scure corrugatd, margine deniatd; griseo-albd, nigro 

 undique articidatd. 

 The HAULEauiN Nerite. Shell ovately semiglobose, 

 thick, spire concavely flattened, scarcely exserted, 

 whorls narrow, obsoletely flatly ribbed, aperture 

 rather eff'used, lip finely denticulated within, colu- 



mella thickly callous, polished, obscurely wrinkled, 

 toothed at the edge ; greyish-white, articulated witii 

 black throughout. 



LiNN^us, Syst. Nat. (12th edit.) p. 1254. 



Hah. Australia. 



A solid superficially ribbed shell, articulated regularly 

 and tbronghout with black, with tlie whorls somewhat 

 pinched towards the apex and eft'uscd towards the aper- 

 ture. 



Species 28. (I'ig. a, h, Mus. Cuming.) 



N"erita balteata. Ner. testd ovato-snbglobosd, solidd, 

 spird declivi, vi.r exsertd, anfractihns suhangiistis, spi- 

 raliler tira/i.i, liris teiiiiihiix, fitniculatis, labro intus 

 ii/rrti.fsn/o, iiiiniiti linifo, cnlimii-Ud Imoigatd, superne 

 eorrngald, margine obsolete, deidiculatd; ccendescente- 

 nigrd, liris hie Ulic alho sparsini. articulatis. 



The belted Nerite. Shell ovate -subglobose, solid, 

 spire slanting, scarcely exserted, whorls rather nar- 

 row, spirally ridged, ridges fine, corded, lip in- 

 wardly thickened, minutely ridged, columella smootli, 

 wrinkled at the upper part, obsoletely toothed at the 

 edge ; blue-black, ridges here and there sparingly 

 articulated with white. 



Hah. ? 



A dark blue-black shell, finely spirally corded through- 

 out, the cords being sparingly articulated here and there 

 with white. 



Species 29. (Fig. a, h, Mus. Cuming.) 



Nerita Essingtoni. Ner. testd ohlongo-globosd, spird 

 sidiexsertd, anfractihns snperne concavo - inipres.iis, 

 delude conve.i:is, undique spiraliter lirat.o-funiculuti.\, 

 Inhro iiiluspariiiu i,ivrassi,tn.dnilihu>i lateral ilii's ,1m,. 

 hu.s, rolai.irlhl l,-r'iler cnrnn,ala, uianjine uciili' ,lr„l,- 

 culatd ; ciiu-reo-ynscd, iiigricaute obscure fascuild it 

 cariegatd, punctis albidis aspersd. 

 The Port Essington Nerite. Shell oblong-globose, 

 spire rather exserted, whorls concavely impressed at 

 the upper part, then convex, everywhere spirally 

 ridge-corded, lip but little thickened inwardly, with 

 two lateral teeth, columella faintly wrinkled, sharply 

 toothed at the edge ; ash-gTey, obscurely banded and 

 variegated with pale black, sprinkled with white dots. 

 Recluz, Petit, Journ. Conch, vol. i. pi. 11. f 9. 

 Hab. Port Essington, Australia. 



Of a grey ground-tint, s]n-inkled throughout with mi- 

 nute whitish dots, and obscurely banded with pale black. 



August, 1855. 



