PECTEN.— Plate XXXV. 



equal, straight, sharply serrated, toothed, violet 



within. 

 Hinds, Moll. Voy. Sulphur, p. 61. pi. 17. f. 4. 

 Hah. West coast of Veragua. In seventeen fathoms, 



among sandy mud ; Hinds. 



A beautiful and delicate shell, traversed by numerous 

 small finely serrated ribs, a large portion of which are 

 gathered into five bunches or bundles, the others being 

 less aggregated, and occupying the interspaces. The au- 

 ricles diff'er in size, and are strongly grooved, with inter- 

 vening sharp ridges. Within the valves are coarsely 

 ribbed, and of a rich peach-colour. — Hinds. 



Species 172. (Mus. Hinds.) 



Helix digitatus. Pect. testa suhtrigond, planiusculd, 

 solids, aquianrictdatd, pallida, sanguineo transversim 

 nubeculatd ; valvis consimilibus, costis novem. rotunda- 

 tis sulcatis ; umbonihiis suhplanatis, Iwvigatis ; margi- 

 tiibus minute denticulatis ; iutiis alba. 



The fingered Pecten. Shell somewhat triangular, 

 rather flat, solid, equal-eared, pale, clouded trans- 

 versely with blood-red; valves very like, with nine 

 rounded grooved ribs ; umboes rather flat, smooth ; 

 margins minutely denticulated ; white within. 



Hinds, MoU. Voy. Sulphur, p. 61. pi. 17. f. 3. 



Hab. Bay of Guayaquil. In twenty-three fathoms, mud ; 

 Hinds. 



The description and figure of this and the preceding 

 species, which are unknown to me, are copied from the 

 ' Mollusca of the Voyage of the Sulphur.' 



Species 173. (Mus. Cuming.) 



Pecten multicostatus. Pect. testa ovatd, tenuiculd, 

 gibbosd, aquilaterali, (eqtcivalvi, valvis costis triginta 

 angustis subdistantibus, obsolete nodulosis, ad latera 

 subsquamulatk radiatis ; intense miniaced, immacu- 

 latd, ad nmbones albo marmoratd ; auriculis valde in- 

 aqtialibiis. 

 The many-kibbed Pecten. Shell ovate, rather thin, 

 gibbous, equilateral, equivalve, valves rayed by tliirty 

 rather distant, narrow, obscurely noduled ribs, finely 

 scaled at the sides ; deep vermilion, unspotted, mar- 

 bled with white at the umboes ; ears very unequal. 

 Hab. New Zealand. 



A light gibbous deep-coloured sheD, rayed with nume- 

 rous cord-like ribs. 



Species 174. (Mus. Cuming.) 



Pecten textilis. Pect. testa ovatd, subaltiore qiiam 

 longd, aquilaterali, subaquivalvi, valvd sinistra plani- 

 ore, ambabus dense irregulariter liratis, liris undique 

 obtuse squamatis ; alba, vivide aurantio marmoratd; 

 auriculis valde ineequalibus. 



The beocaded Pecten. Shell ovate, rather higher than 

 long, equilateral, nearly eqiuvalve, left valve flatter, 

 both valves densely irregularly ridged, ridges ob- 

 tusely scaled throughout ; white, mottled with bright 

 orange ; ears very unequal. 



Hab. ? 



Allied in some respects to P. pusio, but differing in 



form and sculpture. 



Species 175. (Mus. Cuming.) 



Pecten gemmulatus. Pect. testa trigono-ovatd, paulu- 

 lum altiore quam longd, tentii, aquilaterali, snbaqid- 

 valvi, valvis liris subtilibus gemmulatis undique pul- 

 clierrimle radiatis ; pellucido-ca7'iied, nstulato-spadiceo 

 tinctd, lineis albis brevibus ad latera sparsim promiscue 

 nottttd, valvd dextrd pallidiore ; auriculis valde ina- 

 qualibus. 



The finely-beaded Pecten. Shell triangularly ovate, 

 a little higher than long, thin, equUateral, equivalve, 

 valves very beautifully rayed throughout with fine 

 beaded ridges ; transparent flesh tinged with burnt 

 fawn-colour, sparingly promiscuously marked at the 

 sides with short white lines ; ears very unequal. 



Hab. ? 



Very delicately and strikingly sculptured. 



Species 176. (Mus. Cuming.) 



Pecten tenuigranosds. Pect. testa ovatd, compresso- 

 convexd, vix aqidlaterali, subinaquivalvi, valvis liris 

 numerosis tenuibus, subtiliter noduloso-squamatis, inter- 

 stitiis peculiariter dense granulatis, radiatis ; valvd si- 

 nistra rnfo-purpured, dextrd albicante ; auriculis valde 

 ineequalibus. 

 The fine-grained Pecten. Shell ovate, compressly 

 convex, scarcely equUateral, rather inequivalve, valves, 

 rayed with numerous thin ridges, finely nodulously 

 scaled, interstices peculiarly granulated ; left valve 

 reddish-purple, right valve whitish ; ears very un- 

 equal. 



Hab. ? 



The sculpture of this species is also peculiar and dis- 

 tinctly marked. 



