FISSURELLA 



Plate XIII. 



Species S'J. (ilus. Cuming.) 



FissuRELLA CANDIDA. Fiss. teslti subelongato-ovatci, coii- 

 cavo-elevata, laleribm subcompressd, crassiuscuM, I iris 

 parvis conceutricis et radiantibns midique decussatd, 

 orificio parvo, aiUice valde incUnato, laleribus viedio ex- 

 cavaii.i ; alba, immaculatd. 



The white Fissurella. Shell somewhat elongately 

 ovate, concavely raised, somewhat compressed at the 

 sides, rather thick, decussated throughout with small 

 radiating and concentric ridges, orifice small, very 

 much inclined anteriorly, sides excavated in the 

 middle; white, unspotted. 



SowERBY, Conch. Illus. Fiss. Cat. p. 7. f. 58. 



Hab. ? 



The truncated gi-owth of the posterior basal edge, de- 

 scribed by Mr. Sowerby, appears to be accidental. 



Species 90. (Mus. Cuming.) 



FissuRELLA ExacisiTA. Fiss. testa ovatd, medio elevato- 

 conicd, vix antice inclinatd, liris radiautibus et conceu- 

 tricis undique eximie profundi claikratd, liris radian- 

 tibus alternis minoribus, prope orificium evanidis, orifi- 

 cio orbiculari-ovato, parviusculo ; pellucido-albd. 



The exquisite Fissurella. Shell ovate, elevately co- 

 nical in the middle, scarcely inclined anteriorly, de- 

 licately and deeply latticed tlu-oughout with radiating 

 and concentric ridges, of which the alternate are 

 smaller and disappear near the orifice, orifice orbi- 

 cularly ovate, rather small ; transparent white. 



IM. ? 



The latticed sculpture of this species is extremely de- 

 licate and well-defined. 



Species 91. (Mus. Cuming.) 



Fissurella catillus. Fiss. testa oblongo-ovatd, crassius- 

 culd, lateribm subcompressd, obscure decnssatiin liratd, 

 liris subrudibus, fere evanidis, orificio ovato, subamplo ; 

 rosacea, albido-radiatd. 



The little dish Fissurella. Shell oblong-ovate, 

 rather tliick, a little compressed at the sides, ob- 

 scm-ely decussately ridged, ridges somewhat rude, 

 abnost faded, orifice ovate, rather large; pinkish, 

 raved with dull white. 



Hab. Java. 



This specimen is uncoloured round towards the base, 

 which is not likely to be a character of the species. 



Species 92. (Mus. Cuming.) 



Fissurella digitale. Fiss. testd orbiculari-ovatd, gib- 

 boso-conicd, aiitice valJi inclinatd, striis elevatis radi- 

 antibus et concentricis uinliqKc rrrherrime decussatd, 

 orificio parvo, suborhn-iilurl ,■ iiilfHsi: cinered, prope 

 basin fused, circa orifiriiint cceriilcscenle. 



The thimble Fissurella. Shell orbicularly ovate, gib- 

 bously conical, very much inclined anteriorly, very 

 closely decussated throughout with raised concentric 

 and radiating ainx, orifice small, nearly orbicular ; 

 deep ash-colour, brown near the base, bluish around 

 the orifice. 



IM, 3 



An extremely characteristic species, having very much 

 the appearance of a small Patella. 



Species 93. (Mus. Cuming.) 



Fissurella dactylosa. Fiss. testd ovatd, siibconicd, 

 liris radiautibus et concentricis acute dense, clathrald, 

 liris radiantibus alternatiM majoriLus et prominent ibus, 

 orificio ovato, parvo ; albidd, ferrugineo-fusco pallide 

 latiradiatd. 



The fingered Fissurella. Shell ovate, rather co- 

 nical, sharply thickly latticed with radiating and con- 

 centric ridges, wliich are alternately larger and pro- 

 minent, orifice ovate, rather small ; whitish, faintly 

 broadly rayed with rust-brown. 



llab. Kurrachee, Mouth of the Indus. 



In this species every other alternate ridge is larger and 

 more prominent than the rest. 



Species 9 t. (Mus. Cuming.) 



Fissurella austkalis. Fiss. testd ocald, medio valde 

 elevatd, antice concaviuscntd, costis cosieUisque com- 

 pressis, acutis, radiantibus, liris concentricis undique 

 profandenodoso-clttthratd, or ficio parvo, ovato ; albidd, 

 pallide ferrugineo subobscure maculato-radiafd. 



The southern Fissurella. Shell ovate, much raised in 

 the middle, rather concave anteriorly, deeply nodosely 



1850. 



