﻿C Y E E N A. 



Plate X. 



Fig. 31, li, c. Cyeena Caeoliniensis. (See PI. VIII.) 



Species 38. (Mus. Brit.) 



Ctkexa xitidula. Cyr. testa ovatd, siihcompronsa, cm- 

 centrici tenuiter striata, stramined, antice breviuri, 

 suhamminatd, postice magis exfansd, ohtiisd ; vui. 

 bonibus subdepressis, margine dorsal! postt'rl' imulo, 

 antice valde declivi. 



The shining little Cteena. Shell ovate, subcom- 

 pressed, concentrically finely- striated, straw- 

 coloured, in front rather short, snbacuminated, 

 posteriorly more expanded, obtuse ; nmboes 

 rather depressed, dorsal margin a little sloped 

 behind, much in front. 



Deshayes. Proc. Zool. Soc. 1854, p. 21. 



Hah. — -? 



Species 39. (Mus. Brit.) 



Cyrena sublobata. Cyr. testd magnd, crassd, oblongd, 

 epiderndde fused, rugosd induid ; latere antico 

 brevissirtio, s^^b umbones ai-ed lunulari convexd im- 

 pressn ; latere postico producio, radiatim bmclcato, 

 ma/rgine dorsali arcuatim declivi, margine tcrnii- 

 nali leviter sinuatim hbato. 



The sUBLOiiED Cyeena. Shell large, thick, oblong, 

 covered with a brown rough epidermis ; anterior 

 side very short, impressed with lunular convex 

 area ; posterior side produced, with two radiating 

 grooves, dorsal margin sloped in an arch, ter- 

 minal margin sinuously slightly lobed. 



Deshayes ? MS. Cum. Col. 



H'ib. The Lonisiade Ai-chipelago. 



In some degree like Cyrena Gyprinoidi's, but more 



oblong, and having a double groove at the back, 



which gi\Ts a lobed character to the posterior margin. 



Species -Lo. (Mus. IJril.) 

 CykENA CaLEDONICA. Cyr. ^-.v/,; ,s»/,,y»,„/r.(/.;, .■,„.« 

 rpidn-wldr cni^M, 'ri'^josa, „Iir„rr„.f „.■<,■,!. ,„l„l, 

 tantrr sfrinJ.!, strii.-- s,i,nu,ios<,-li„,hrn,f,.<: Uitr 



aHlirn //Aw/.v.v/,,,,., „,V,; /,,„,//,„■/ inljur.sn, nntnjuir 



hilrralif.rr j.rrjn'nii;,;,!,,,; : ,n„I>.,„il„>s s,il.l.i„n. 

 nalihus; bifrrr j).«/,V„ ^i,l„i„„.lrnl«, ,„an/nir J,.,-. 

 sali arcuatu, luaryinc terminali siitnato. 



The Caledonian Cyeena. Shell subquadrate, thick, 

 covered with a thick, rough, olive-brown epider- 

 mis, distantly striated, striie with a scaly fringe ; 

 anterior side very short, impressed with a lunular 

 area ; lateral margin almost perpendicular ; um- 

 bces nearly terminal ; posterior side rather square, 

 dorsal margin arched, terminal margin sinuated. 



Gassies. ■ ? MS. Brit. Mus. 



ILib. New Caledonia. 



Species 4il.' (Mus. Brit.) 

 Cteena fallas. Cyr. testd oblique subtrigund, tuuiidd, 

 medio distanter, ad latera dense striata, sordide 

 olivaced, prope umbones snbgihbosd ; latere antico 



U)nbo)iihiig , Iri'ilif:. ..n///,-.-, ifninjiiir ihiisiili decUvi, 

 vtargiue piistii-n-hil.rall hrcritrr Inmr.ifn. 



The FALLACions Cykena. Shell obliquely subtri- 

 gonal, tumid, striated distantly in the middle, 

 closely at the sides, dull olive, rather gibbous 

 near the umboes ; anterior side short, sloped, 

 Innule, impre.ssed with a convex lunular area, 

 nmboes elevated, oval, posterior area sloped, 

 dorsal margin sloped, postero-lateral margin 

 shortly truncated. 



Deshayes. Proc. Zuol. Soc. 18.j4-, p. 1.:;. 



Hah. y 



