PECTEN.— Plate XXXIV. 



tuor et viginti pecuUariter trifariam divisis et profuse 

 squamatis radiatis ; intus extusque intense purpureo- 

 miiiiaceo, auraniio-iinctd, immaculatd ; aiirivulis in- 

 (Bqualibics. 



The cakkot Pecten. Shell somewhat obliquely orbicu- 

 lar, rather ventricose, equivalve, inequilateral, valves 

 rayed with four-and-tweuty peculiarly three-divided 

 profusely scaled ribs ; deep purple vermilion, within 

 and without tinged with orange, unspotted ; ears un- 

 equal. 



Hab. Island of Corfu. 



Remarkably deep-toned in coloui- both within and with- 



out. 



Species 164. (Mus. Cuming.) 



Pecten eeticulatus. Pect. testa ovatd, subaltiore quam 

 longd, convexo-compressd, cequilaterali, stcbtequivalvi, 

 valvis costls duabus et viginti lavibm regularibns ra- 

 diatis ; albidd, maculis purpureo-rufis aspersd, lineis 

 tenuibus arcuatis undique per castas ; auriculis siib- 

 amplis incequalibus. 



The netted Pecten. Shell ovate, rather higher than 

 long, convexly compressed, equilateral, nearly equi- 

 valve, valves rayed with two-and-twenty smooth re- 

 gular ribs ; whitish, sprinkled with blotches of pur- 

 ple-red, with arched lines throughout across the ribs ; 

 ears rather large, unequal. 



Hab. ? 



The painting of this species is similar in design to that 

 of P.fricatus, but the shell is quite distinct in form. 



Pig. 16.5. (Mus. Cuming.) 



This very characteristic species proves on examination 

 to be a variety of P. larvatus, Sp. 158, under which head 

 its peculiarity of coloui'ing is noticed. 



Species 166. (Mus. Cuming.) 



Pecten cloacatus. Pect. testa trigono-ovatd, subflabel- 

 liformi, subventricosd, cequivalvi, (squilaterali, valvis 

 costis sedecim radiatis, costis elevatis, rotundatis, sub- 

 nodoso-crenatis, subdistanfibas, lateribiis interstitiisque 

 excavatis ; alba, cinereo-cartieo tiuctd et maculatd ; 

 auriculis inaqualibiis. 



The guttered Pecten. Shell triangularly ovate, some- 

 what fan-shaped, rather ventricose, equivalve, equi- 

 lateral, valves rayed with sixteen ribs, which are 

 raised, rounded, subnodosely crenated and rather 

 distant, with the sides and interstices excavated ; 

 white, stained and spotted with ash-flesh colour ; ears 

 unequal. 



Hab. Philippine Islands. 



An extremely characteristic species, quite distinct from 

 any hitherto described. 



