PECTEN. 



Plate XXIX. 



Species 125. (Mus. Cuming.) 



Pecten sentis. Pect. testa subtrigotio - ovatd, altiore 

 quam longd, aquivalvi, subaqidlateraU, profuse temii- 

 liratd, Uris alternatim majoribiis, dense aculealo-squa- 

 matis, intense minlatd, maculis perpaucis all/is ad la- 

 tera; auriculis valde inaqualibus, anticis amplis, sub- 

 Jlexuosis, posticis vix mdlis. 



The bramble Pecten. Shell somewhat triangularly 

 ovate, higher than long, equivalve, nearly equilateral, 

 profusely finely ridged, ridges alternately larger, 

 densely prickly-scaled, deep vermilion, with a very 

 few whitish spots at the sides ; ears very unequal, 

 the anterior large and flesuous, the posterior almost 

 none. 



Hab. ? 



A delicate finely prickly-scaled species, of a deep ver- 

 milion coloiu', with the ears very unequal. 



Species 126. (Mus. Cuming.) 



Pecten kussatus. Pect. testa suhtrigono - orbicidai-i, 

 aquilaterali, aquivalvi, vahis costis ad viginti angus- 

 tis radiatis, interstitiis subexcavatis, ad latera costa- 

 rum serrulatis ; earned, rufo-fusco lentiginosd ; auri- 

 culis valde inaqualibus. 



The flesh-tinoeb Pecten. Shell somewhat triangu- 

 larly orbicular, equilateral, equivalve, valves rayed 

 with about twenty narrow ribs, interstices rather 

 hollow, serrulated nt the sides of the ribs ; flesh- 

 colour, freckled with red-brown ; ears very unequal. 



Hab. Sandwich Islands. 



A small sharply-ribbed freckled shell. 



Kg. 127. (Mus. Cuming.) 



Tills shell proves to be a small yellow variety of P. ex- 

 asperatus, described at PL II. 



Species 128. (Mus. Saul.) 



Pecten spectabilis. Pect. testa ovatd, Jiabelliformi, 

 aqidlaterali, incequivalvi, valvd sinistra planatd, costis 

 duodecim subirregularibus, elevatis, superni rotmidatis 

 et concentrice annulato-liratis, radiatd ; valvd dextrd 

 convexd, co.His latioribus annulato-liratis, interstitiis in 

 valvis ambabus tenuiscalirosis ; alba, costis alternatim 



June, 



nigricante et minio tessellatis ; aicricuUs grandibus, sub- 

 (equalibus, rufipimctatis. 



The bemaekable Pecten. Shell ovate, fan-shaped, 

 equOateral, inequivalve, left valve flattened, rayed 

 with twelve somewhat irregular ribs, rounded and 

 concentrically ring-ridged at the upper part ; right 

 valve convex, ribs broader, ring -ridged, interstices 

 in both valves finely scabrous ; white, ribs alternately 

 tessellated blackish and vermilion ; ears large, nearly 

 equal, red-dotted. 



Hab. ? 



A very beautifully sculptured and peculiarly coloured 

 species, remarkably distinct from any hitherto described. 



Species 129. (Fig. a, b, Mus. Cimiing.) 



Pecten cretatds. Pect. testd ovatd, paululam altiore 

 quam longd, tenui, pellucidd, subinaquilaterali, ints- 

 quivalvi, sinistra convexd, dextrd planiore, ambabus 

 nndiqiie pulclierrinie granulato-serratis, costis tenuibtis 

 angnstis duabus et viginti radiatis; vitreo-albd, valvd 

 sinistra carneo-roseo viaculatd, radiis aut strigis pecu- 

 Uariter opaco-albis ornatd; auriculis parviusculis, sub- 

 aqualibus. 



The chalky Pecten. Shell ovate, a little higher than 

 long, thin, transparent, rather inequilateral, inequi- 

 valve, left valve convex, right valve flatter, both 

 valves very beautifully granulately sen-ated through- 

 out, and rayed with two-and-twenty thin narrow 

 ribs ; glassy white, left valve spotted with flesh-rose, 

 and ornamented with peculiarly opake-white rays 

 and streaks ; ears rather small, nearly equal. 



Hab. ? 



Most elaborately scidptured though of delicate glassy 

 texture, marked with flesh-rose spots and opake chalk- 

 white rays and streaks. 



Species 130. (Mus. Saul.) 



Pecten histrionicus. Pect. testd ovatd, Jiabelliformi, 

 eequilaterali, iiiaquivalvi, valvd sinistrd pland, dextrd 

 convexiore, ambabus costis duodecim lievibus subobtusis 

 radiatis, costis lateralibus serratis ; albd, valvd sinistrd 

 maculis nigris et roseis irregulariter tessellatis et roseo- 

 punctatis, valvd dextrd vix cameo macidatd; auriculis 

 hueqiialibus. 



1853. 



