﻿C Y R E N A. 



Plate XIII. 



Sjieeies 59. (^Fus. Bvlt.) 



Cyrexa Afkicana. Gijr. tcstd siihamqiressd, siildri- 

 (jrrnd, fused, tenuitcr concentrice rugatd; intiis 

 sordide violaced, deutihus lafcrallhus cequaliltHs ; 

 apice elevato, margine dorsali utrinque dedloi ; 

 luargine I'ostko laierali SHhtrttncuto ; sulci's versus 

 margineiti. stihei-anidis. 



The Afhicas Cykexa. Shell rather com{3ressed, 

 somewhat trigonal, brown, finely concentrieally 

 wrinkled, dnll violet within ; lateral teeth equal ; 

 apex raised, dorsal margin sloped downwards on 

 each side, ])osterior lateral margin somewhat 

 truncated ; wrinkles dying (mt towards the 

 margin. 



KnAl-ss. Siid-Afi-ikanischen Jlulluskeu, p. 8, Tab. I. 

 f. 8. 



Cyiriia (Inaritziana. Krauss. in correspondence. 



Ilah. River Guaritz, South Africa. 



Species 60. (Mus. Brit. — Hanley.) 

 Cykexa Casumiriensis. Cijr. testa amipressd, nlh, 

 reipdarlier, proj'niidr, el dense onicen 



^iihtrigtmd, 

 Irire 'liratd 



ilder 



,l,;-li 



roluiuHs, 

 mnrgliie 

 idrali ro- 



•de fuse 

 intHs densi aolaced, vel alhd ; 

 elemtls, mar,/!,,. d„rs,d! uirn 

 postiao-lateraJ i snhlriiiii-iiln ; 

 tHiido; suh-is .id l„l,-r,i n-.mldis. 



The Cashmeke Cyuexa. Shell compressed, raised, 

 subtrigonal, regularly, deeply, and closely concen- 

 trically ridged, covered with a blackish-brown 

 epidermis, deeply violet or white within ; umboes 

 rounded, raised, dorsal margin sloped on each 

 side, postero -lateral margin rather truncated, 

 ventral margin rounded ; grooves disappearing 

 at the sides. 



Deshayes, Prime. Pro. Ac. Xat. Sci. Phil. 1854. 



JIali. Cashmei'e. 



M. Hanley has a single valve of this shell densely 



purple within ; while the specimens in the British 



iVIuseum are pure chalky white. 



Species (jl. (IMus. Sowerby.) 



Cyrexa Largillieeti. Cyr. tesld suhtrujmid, tumidd, 

 ejjidermide stramineo-olivacad iiidutd, antich suh- 

 irregvlariter rugatd, posfice hevi nsnuld ; iidiis 

 prope Hi,ir,,!,u;,i. parpnreufaseud,,; ,unho„;hus 

 tu„iid;.<, inn;., urn I rir^ulnilis, c/-,v//v.- ;,(,.,•;//».■ 

 dorsal! i,/rl,o^i„' drrlir;, nuir.jnie ,;:,ihai; mlniidn; 

 hdere postico truncato, suhangulato. 



Laegillieut's Cyrexa. Shell trigonal, tundd, covered 

 with an olive-straw epidermis, anteriorly some- 

 what iiTegularly wrinkled, posteriorly rather 

 more smooth ; banded with purple inside near 

 the margin ; umboes tumid, three-rayed with 

 ])urple, raised ; ventral margin rounded ; jioste- 

 rior side truncated, slightly angular. 



Philippi. Zeitschrift fiir Malak. 1844. 



Hah. China. 



Species 62. (JIus. Sowerby.) 

 Cyrena Sumatkensis. Cyr. testd snhuoatd, tumidd, 

 eoiireidriee irregidariier rugatd, epidcnuide oliva- 

 eeu-l'iiscd_, siilifoHaced indidd ; hitiis 



ird;. 



ill id ;^ 



t 

 The ? 



did, dente cardnmli mdn-n 



■inagis reniotu; Intn-i: luittrn 



■III,' derliri ; liiferc postico niagis 



diirsali I'hralii ; unihoHi'Mis ol- 



I \. Shell subovate, tumid, con- 



cenliii ;ill\ in r-ularly wrinkled, covered with an 

 olivu-browu slightly leafy ejaidermis ; white 

 within, very pale orange in the middle ; anterior 

 cardinal tooth very short, posterior more remote ; 

 anterior side short, dorsal margin sloped ; pos- 

 teiior side more produced, dorsal margin raised ; 

 umboes very obtuse, depressed. 



Sowerby. Genera of Shells. No. 2. 



Cyrena Saigoneiisis. ? 



Hah. Sumatra. — Saigon, China. 



