PECTEN. 



Plate XXIII. 



Species 90. (Mus. Cuming.) 



Pecten rubidus. Pect. testa suborbiculari, tenuiculd, 

 aqidlaterali, inaquivalvi, valva dextrd plmdore, valvis 

 ambabns dense irrer/ulariter costatis, sulcatis, et Uratis; 

 albd, liris subtiliter granulato-serratis, liris valva si- 

 nistra eximie roseis ; miriculis valde inaqualibus. 



The ruddy Pecten. SheU somewhat orbicular, rather 

 tliin, equilateral, inequivalve, right valve the flatter, 

 both valves densely irregularly ribbed, gi'ooved, and 

 ridged; white, ridges finely granulately serrated, 

 ridges of the left valve delicate rose ; ears veiy un- 

 equal. 



Hinds, Zool. Voy. Sulphur, Moll. p. 61 pi. 17 f. 5. 



Hab. Alashka, North - west America, at thirty - three 

 fathoms ; Hiuds. 



An extremely delicate and characteristic species, allied 

 in some respects to P. Islandicus. 



Species 91. (Mus. Cuming.) 



Pecten Eeevei. Pect. testa orbiculari, subaquilaterali, 

 aquivalvi, viffiiiti-costatd, costis latinsculis, elevatis, con- 

 fertis, lineis concentricis minute densissinie deciissatis ; 

 albd, intense carmineo et violascente tinctd et variegatd; 

 auriculis cequalibiis. 



Eeeve's Pecten. Shell orbicular, nearly equilateral, 

 equivalve, twenty-ribbed, ribs rather broad, raised, 

 close-set, minutely very thickly decussated with con- 

 centric lines ; white, stained and variegated with deep 

 carmine and violet ; ears equal. 



Adams, Moll. Voy. Samarang, p. 73. pi. 21. f. U)a,b. 



Hub. China. 



Peculiar in form and sculpture, and brOliautly varie- 

 gated with crimson and violet. 



Species 92. (Mus. Cuming.) 

 Pecten Solaris. Pect. testd orbiculari, subflabelliformi, 



cequilaterali, subaqidvalvi, ad umbones et prope mar- 

 ginem compressd, valvis costis sexdecim ad oetodecim 

 radiatis, costis latiusculis, vix elevatis, ad latera plus 

 minus obsoletis, striis concentricis ubique nitide deciis- 

 satis ; alhdyfusco-rubro varie tinctd et maculatd; au- 

 riculis agualibus. 



The sun Pecten. SheU orbicular, somewhat fan-shaped, 

 equilateral, nearly equivalve, compressed at the um- 

 boes and near the margin, valves rayed with sixteen 

 to eighteen ribs, ribs rather broad, but slightly raised, 

 more or less obsolete at the sides, neatly decussated 

 everywhere with concentric strise; white, variously 

 stained and mottled with brown-red ; ears equal. 



Born, Mus. Caes. Vind. pi. 6. f. 4. 



Hab. Macassar and China. 



A peculiarly compressed species, variously painted but 

 always with one idea of pattern. 



Species 93. (Mus. Cuming.) 



Pecten spectrum. Pect. testd orbiculari, subaltiore quam 

 longd, tenuicidd, subirregidari, aquilaterali, aqidvalvi, 

 valvis lavigatis, aid sub lente minutissime decussatd, 

 decemcostatis, costis plus minus obsoletis et irregulari- 

 bus ; albidd, valvd sinistra olivaceo-fusco pallide tinctd, 

 prope umbonem maculatd ; auriculis grandibus, eequa- 

 libus. 



The ghost Pecten. Shell orbicular, rather higher than 

 long, rather thin, somewhat irregular, equilateral, 

 equivalve, valves smooth, or, beneath the lens, very 

 minutely decussated, ten-ribbed, ribs more or less 

 obsolete and irregular ; whitish, left valve faintly 

 stained with olive-brown, spotted near the umbo ; 

 ears large, equal. 



Hab. Australia. 



A broad-spread thin species, of irregular growth, indis- 

 tinctly coloured except near the umboes. 



May, 1853. 



