PECTEN. 



Plate XXVII. 



Species 111. (Mus. Cuming.) 



Pecten gemmulatus. Pect. testa subtngono-orhiculari, 

 teimi, compressd, aqidlaterali, subceqiiwalvi, I'adiatim 

 dense liratd, Uris hie iJlic majoribus, iindique pulcher- 

 rime minuli viuricato-serratis ; albidd, carneo -rosea 

 tinctd ; auricuUs valde inaqualibus. 



The finely-beaded Pecten. Sliell somewhat trian- 

 gularly orbicular, thin, compressed, equilateral, 

 nearly equivalve, radiately densely ridged, ridges 

 here and there larger, very beautifully minutely 

 prickly serrated thi-oughout ; whitish, stained with 

 flesh-rose ; ears very unequal. 



Hab. New Zealand. 



A thin rather fragile species, very delicately but densely 

 prickly-serrated throughout. 



Species 112. (Mus. Cuming.) 



Pecten speciosus. Pect. testa trigono-orbiculari, com- 

 pressd, csquilaterali, subaquivalvi, valvis costis duode- 

 cim ad li'edecim radiatis, costis latiusculis subconfertis, 

 squamis amplis pidcherrime fornicatis nndique dense 

 ornatis ; alba, valvd sinistrd nigricante-fiisco roseoque 

 tinctd et tessellatd, dextrd pallidiore ; auriculis iucB- 

 qiialibiis, imbricato-squamatis. 



The beautiful Pecten. Shell triangularly orbicular, 

 compressed, equilateral, nearly equivalve, valves 

 rayed with twelve to thirteen ribs, which are some- 

 what broad and rather close-set, densely ornamented 

 throughout with large very beautifully vaulted scales ; 

 white, left valve stained and tessellated with blackish- 

 brown and rose, right valve paler ; ears unequal, im- 

 bricately-scaled. 



Hab. Phihppine Islands. 



This very beautiful little species is furbelowed tlu-ough- 

 out with rather broadly vaulted scales, and most delicately 

 coloured. 



Species 113. (Mus. Cuming.) 



Pecten nasans. Pect. testd ovatd, tenui, pelliicidd, au- 

 reo-vitred, sub lente mimttissiine concentrice striata, 

 aquilaterali, aquivalvi, valvis costis obtusis, subobsole- 

 tis, irregulariter radiatis ; auriculis subinceqiialibus. 



The golden Pecten. Shell ovate, thin, transparent, 

 golden-glassy, beneath the lens very minutely con- 

 centrically striated, equilateral, equivalve, valves irre- 

 gularly rayed with rather obsolete obtuse ribs ; ears 

 rather unequal. 

 Philippi, (Mus. Cuming.) 

 Hab. Straits of Magalhaens. 



A delicately transparent golden glossy shell, with some- 

 what the aspect of a Terebratula. 



Species 114. (Pig. a, b, Mus. Cuming.) 



Pecten vexillum. Pect. testd orMcnlari, ad latera sub- 

 impressd, crassd, (equilaterali, subaqidvalm, valvis nn- 

 dique tenuiliratis et dense minutissime serratis, costis 

 grandibus octo radiatis ; valvd sinistrd carmiued vet 

 cinereo-grised, albo promisciie maculatd, valvd dextrd 

 albidd, carmineo punctatd ; auriculis aqualibus. 



The flag Pecten. Shell orbicular, rather impressed at 

 the sides, thick, equilateral, nearly equivalve, valves 

 finely ridged and densely very minutely serrated 

 throughout, rayed with eight large ribs ; left valve 

 carmine or ash-grey, promiscuously spotted with 

 white, left valve whitish, dotted with carmine ; ears 

 equal. 



Hab. ? 



A beautiful and very characteristic species, variously 

 painted, although the painting above described is the pre- 

 vailinsr colour. 



Species 115. (Fig. a, 6, Mus. Cuming.) 



Pecten pica. Pect. testd orbiculari, compressd, eequilate- 

 rali, suba;quivalvi, valvis costis una et viginti angustis 

 radiatis, interstitiis excavatis ; albd, griseo etfusco-ni- 

 gricante variegatd ; auriculis grandibus, subaqualibus. 



The magpie Pecten. Shell orbicular, compressed, equi- 

 lateral, nearly equivalve, valves rayed with twenty- 

 one narrow ribs, interstices excavated ; white, varie- 

 gated with grey and brown-black ; ears large, nearly 

 equal. 



Hab. New Zealand. 



A new and well-marked species, pied with brown-black 

 and grey. 



May, 1853. 



