NERITA. 



Plate IX. 



Species 40. (Fig. a, h, Mus. Cuming.) 

 Xeiuta gemml'lata. Ner. testa ovato-semiglobosd, teinii- 

 culd, spird subexsertd, apice mucronatd, anfractibus 

 convexis, spiraliter Ihieari-Urntis, Uris creuidato-gi'M- 

 matis, coliwielld piano - excavatd, margiiif iiitegro ; 

 griseo-albidd, Uris c<sride.o-nigro et opaco-albo teniii 

 articulatis, apice lutescente. 

 The gemmed Neeite. Shell ovately semiglobose, rather 

 thin, spire slightly exserted, sharp-pointed at the 

 apex, whorls convex, spirally linearly ridged, ridges 

 crenulately gemmed, columella flatly excavated, with 

 the margin entire ; greyish-white, ridges finely arti- 

 culated throughout with blue-black and opake-white, 

 apex yellowish. 



llnb. 



shell of light substance with elegantly crenulated 

 », articulated with blue-black and opake-white. 



Species 41. (Fig. a, b, Mus. Cuming.) 



Xehita fragcm. Ner. testd glohom, spird vix exsertd, 

 anfractibus rotundatis, spiraliter teuui confertini cos- 

 taid, lahro intus incrassato, tenue lirato, colmnelld de- 

 cUvi-excavatd, granatd et corrugatd ; ccsruleo-tiiyrd, 

 sirigis perpaitcis liiteis erosis iiotaid, arm columdlari 

 sanguineo-tinctd. 



The ste.^wberey Neeite. Shell globose, spire scarcely 

 exserted, whorls rounded, spirally finely closely rib- 

 bed, lip thickened inwardly, finely ridged, columella 

 slantingly excavated, grained and wrinkled; blue- 

 black, marked with a few yellowish eroded streaks, 

 coluraellar area stained with a blood spot. 



Hab. ? 



Chiefly distinguished by a characteristic blood spot on 

 the granulated area of the columella. 



Species 43. (Fig. a, b, c, d, Mus. Cuming.) 



Nerita plicata. Ner. testd globosd, solidd, spird de- 

 clivi-exsertd, apice iiineronutd, aiifractibns convexis, 

 spiraliter costuln-prirnlis, mlerstitiis excavatis, labro 

 intus incrassato, (inipldrr drntalo et lirato, colmnelld 

 tumidd, verrucoso-corrugatd, et dentatd ; albidd, ma- 

 c/ilis nigris et olivaceis interdum fasciatd. 



The pleated Neeite. Shell globose, solid, spire slant- 

 ingly exserted, pointed at the apex, whorls convex, 

 spirally rib-pleated, interstices excavated, lip thick- 

 ened inwardly, largely toothed and ridged, columella 

 swollen, wart-wrinkled, and toothed ; whitish, some- 

 times banded with black and olive spots. 



LiNN^us, Syst. Nat. (10th edit.) p. 779. 



Hab. West Indies. 



A very characteristic species, of Monodonta-liks form, 



remarkable for its strong development of ribs, teeth, and 



wart-wrinkles. 



Species 43. (Fig. o, b, Mus. Cuming.) 



Nerita tessellata. Ner. testd ovato-subglobosd, spird 

 pariini exsertd, anfractibus convexis, fortiter spiraliter 

 costatis, costis irregularibus, confertis, snperne angu- 

 latis, labro intus tentie crenulato, colmnelld plano-ex- 

 caeatd, tenue granulatd, margine arcuatd ; caruleo- 

 nigro el albo undique tessellald. 



The tessellated Neeite. Shell ovately subglobose, 

 spire slightly exserted, whorls convex, strongly spi- 

 rally ribbed, ribs irregular, close-set, and at the upper 

 part angled, lip faintly crenulated within, columella 

 flatly excavated, finely granuled, arched at the edge ; 

 everywhere tessellated blue-black and white. 



Gmelin, Syst. Nat. p. 3685. 

 Le Tadin, Adanson. 



Hab. Senegal. 



Encircled throughout with close-set strongly tessellated 



ribs, which towards the spire are broader and augulated. 



August, 185 



