PECTEN. 



Plate XXIV. 



Species 94. (Fig. 94 a and 95, Mus. Cuming.) 



Pecten ctineatus. Pect. testa ovatd, altioi'e qimm loiujd, 

 eequilaterali, esquivalvi, valvis versus mari/inetn com- 

 pressis, densissime radiatim liratis et striatis, Uris plus 

 mimis olituse serratis ; colore varid, interdum rnfo-au- 

 rantid nigro sparsim variegatd, interdum mgricanle- 

 ficscd luteo variegatd ; atcriculis valde incequalibus. 



The wedge-like Pecten. Shell ovate, higher than 

 long, equilateral, equivalve, valves compressed to- 

 wards the margin, very thickly radiately ridged and 

 striated, ridges more or less obtusely serrated ; colour 

 various, sometimes reddish -orange variegated spa- 

 ringly with black, sometimes blackish-brown varie- 

 gated with yellow ; ears very unequal. 



Hah. Moluccas. 



It should be observed that the numbers of this charac- 

 teristic new species in the plate are No. 94 a and 95. The 

 Pig. 94 b refers to the following species. 



Species 95. (Fig. 94 4, Mus. Cuming.) 



Pecten albo-lineatus. Feet, testd subtrigono-ovaU, 

 compressd, fpquilalerali, (equwalvi, quinque et viginti- 

 costatd, costls anyustis, elevafis, serratis, interstitiis 

 peculiariter excavatis ; albidd, costis nigro -olivaceis, 

 quinque radiatim pallidioribus, maculis parvis opaco- 

 albis undique peculiariter aspersis ; auricidis valde iii- 

 (Bqualibus. 



The white-lined Pecten. Shell somewhat triangu- 

 larly ovate, compressed, equOateral, equivalve, twenty- 

 five-ribbed, ribs narrow, raised, serrated, interstices 

 peculiarly excavated ; whitish, ribs black-oUve, five 

 radiately paler, peculiarly sprinkled throughout with 

 small opake- hite spots ; ears very unequal. 



SowERBY, Pro. Zool. Soc. 1843. 



Hab. Island of Guimaras, Philippines ; Cuming. 



The ribs of this species are particularly narrow and 

 raised, dark-coloured, while the interstices are hght, and 

 slashed about with opake-white marks. 



Species 96. (Fig. a, b, Mus. Cuming.) 



Pecten pyxidatus. Pect. testd semiglobosd, aquilaterali, 

 inaquivalvi, quinque et viginti-costatd, valvd sinistra 

 plana vel subconcavd, costis subangustis, angulatis, 

 valvd dextrd ventricosissimd, costis latiusculis, convexis, 

 perpaucis medio versus marginem stdcatis ; valvd sinis- 

 tra cinereo-nigrd, albo sparsim maculatd, dextrd albd 

 vel carneo-chierascente ; auricuUs cequalibus. 



The box-like Pecten. Shell semiglobose, equilateral, 

 inequivalve, twenty-five-ribbed, left valve flat or sub- 

 concave, ribs rather narrow, angled, right valve ex- 



tremely ventricose, ribs rather broad, convex, a few 

 grooved down the middle towards the margin ; left 

 valve ash-black, blotched here and there with white, 

 right valve white, sometimes tinged with flesh-ash ; 

 ears equal. 



Boun, Mus. Cms. Vind. pi. 6. f. 5 and 6. 

 Ostrea sulcata, Gmelin. 



Hub. China, Australia, Philippine Islands. 



Distinguished among other characters by a peculiar 

 livid flesh-ash hue. 



Species 97. (Mus. Cuming.) 



Pecten Fabricii. Pect. testd ovatd, aliiore qnam longd, 

 compresso-convexd, subcequilaterali, ce.quivahi, valvis 

 Uris valde irregularibus dense radiatis, sulcis peculia- 

 riter granulato-reticulatis ; valvd sinistra pallide ro- 

 sea et aurantio tinctd et concentrice fasciatd, dextrd 

 albd ; aurlculis subeequalibus. 



Fabricius' Pecten. Shell ovate, higher than long, 

 compressly convex, nearly equilateral, equivalve, 

 valves thickly rayed with very irregular ridges, the 

 grooves between which are peculiarly grain-reticu- 

 lated ; left valve tinged and concentrically banded 

 with light rose and orange, right valve white ; ears 

 nearly equal. 



Philippi, Abbild. und Besch. Conch. Pecten, p. 3. pi. 1. f. 5. 



Hab. Greenland. 



The ridges are very irregular in width, and the grooves, 

 which are sharply cut, are cmiously grain-reticulated. 

 Some of the smaller ridges are squamately serrated near 

 the margin. 



Species 98. (Mus. Cuming.) 



Pecten sanguinolentds. Pect. testd subtrigonu, altiore 

 quam longd, aquilaterali, subtequivalvi, valvis convexo- 

 tumidis, undique peculiariter muricato-squamosis, costis 

 maximis novem radiatis, interstitiis prof U7ide excavatis ; 

 albd, intense carmineo tinctd et maculatd, prcBcipue ad 

 costas ; auriculis incequalibus. 



The blood-stained Pecten. Shell somewhat triangu- 

 lar, higher than long, equilateral, nearly equivalve, 

 valves convexly tumid, peculiarly prickly squamate 

 throughout, rayed with nine very large ribs, inter- 

 stices deeply excavated ; white, stained and spotted, 

 chiefly on the ribs, with rich carmine ; ears unequal. 



Ostrea sanguinolenta, Gmelin, Syst. Nat. p. 3322. 

 Pecten sanguinolentus, Sowerby. 



Hab. Red Sea. 



This very rare and characteristic species is of a peculiar 

 tumid triangular form, curiously prickly-scaled through- 

 out. 



May, 1853. 



