PECTEN. 



Plate XIX. 



Species 66. (Fig. a, b, Mus. Cuming.) 



Pecten pes-felis. Ped. testa trigono-ovali, altiore qxiani 

 hiigd, (Bquilaterali, subaquivalvi, costis rudibus obso- 

 lete nodosis subdistaniibus octoradiatd, costis hdersti- 

 tiisque tenidgranosis et Uraiis ; fusco-rufd, luteo spar- 

 sim pmictatd et undato-notatd ; valvd dextrd palli- 

 diore ; auriculis valde i?tagualibiis, verriicoso-lirafis. 



The cat's-foot Pecten. Shell triangularly oval, higher 

 than long, equilateral, nearly equivalve, rayed with 

 eight rather distant rude obsoletely noduled ribs ; 

 ribs and interstices finely grained and ridged ; brown- 

 red, sparingly dotted and wave-marked with yellow ; 

 right valve paler ; ears very unequal, wart-ridged. 



Ostrea pes-felis, Linnaeus, Syst. Nat. (12th edit.) p. 1146. 

 Ostrea elongata. Born. 

 Pecten pes-felis, Lamarck. 

 Pecten Bornii, Payraudeau. 



Hab. Mediterranean. 



The primary ribs are the same in all varieties of this 

 species, but there are one or two ribs more than are here 

 mentioned formed at the sides in some specimens. 



Species 67. (Mus. Cuming.) 



Pecten splendidulus. Pect. testa suitrigono-ovali, com- 

 pressd, ad latera angulatd, auriculis valde inaqualibus, 

 oblique productis, tenue squamoso-liratis, tequivalvd, 

 costis rotnndatis ad quiiique et viginti muricato-squa- 

 matis concinne radiatd, squamis lateralibus prominen- 

 tioribus ; intense sanguineo-rufd, rosaceo-albo ad auri- 

 culas et ad latera plus minus promiscue fasciatd. 



The splendid Pecten. Shell somewhat triangularly 

 oval, compressed, angled at the sides ; ears very un- 

 equal, obliquely produced, thinly scale-ridged ; equi- 

 valve, neatly rayed with twenty -five prickly scaled 

 rounded ribs, lateral scales the more prominent ; deep 

 blood-red, more or less promiscuously banded at the 

 ears and at the sides with pink-white. 



SowEEBY, Thesaurus Conch, vol. i. p. 76. pi. 30. f. 246. 



Hab. Singapore. 



The pale blotches on the ears and sides of this species 

 are characteristic. 



Species 68. (Mus. Cuming.) 



Pecten ORNAtus. Pect. testd subtrigono-ovatd, coin- 

 pressd, interdum subdistortd, inaquilaterali, aquivalvi, 

 costis lirisque numerosis augustis, fortibus, irregulari- 

 bus, granulatis, peculiariter crebriradiatd ; lutescente- 

 albd, valvd sinisird purpureo-rufo profuse maculatd, 

 liris duabtts vel tribits centralibus fere immaculatis, 

 valvd dextrd purpurascente versus marginem tinctd. 



The ornamented Pecten. Shell somewhat triangularly 

 ovate, compressed, sometimes a little distorted, in- 

 equilateral, equivalve, peculiarly closely rayed with 

 numerous irregidar, strong, narrow, granuled ridges ; 

 yellowish-white, left valve profusely spotted with 

 purple-red, two or three of the central ridges being 

 almost unspotted, right valve tinged with purple to- 

 wards the margin. 



Lamarck, Anim. sans vert. (Deshayes' edit.) vol. vii. 

 p. 150. 



Hab. Barbadoes. 



This is a very characteristic species, remarkable for the 

 strong laterally compressed irregular development of the 

 ribs and ridges, and in the distribution of colouring mat- 

 ter, which generally leaves two or three of the central ribs 

 more or less without colour. M. Deshayes has inadvert- 

 ently repeated this name in reference to a fossU species. 



Species 69. (Mus. Cuming.) 



Pecten ortjentatus. Pect. testd siibtrigono-orbiculari, 

 altiore quam longd, ceqmlaterali, csquivalvi, costts ad 

 septem et viginti, plano-convexis, confertis, centralibus 

 latioribus, obsolete arcuatim striatis radiatd ; intense 

 coccineo-rufd, albido Jtic illic sparsim maculatd ; auri- 

 culis valde inaqualibus, obliquis, posticis brevissimis. 



The blood-red Pecten. Shell somewhat triangularly 

 orbicular, higher than long, equilateral, equivalve, 

 rayed with about twenty-seven flatly convex close- 

 set ribs, the central being regularly broader; deep 

 scarlet-red, sparingly spotted here and there with 

 white ; ears very unequal, oblique, posterior ears 

 very short. 



Pecten sanguineus, Sowerby (not of Gmelin). 



Hab. Cape Upstart, North Australia ; Jukes. 



The shell noticed by Mr. Sowerby as a dark variety of 



April, 1853. 



