PECTEN.— Plate XXVI. 



Species 109. (Mus. Cuming.) 



Pecten asperulatus. Pect. testa subtrigono-orbiculari, 

 rudi, irregulari, cequilaterali, siibaquivalvi, racUatim 

 d-ense fortiter liratis, liris valde irregularibus, ut plu- 

 rimum binis, muricatim squamato-serratis ; albidd ant 

 hiiescente, p)vpe marginem violaceo tinctd, ad umbones 

 miuiaced; auricuUs inaquaUbus, anticis grandibus sub- 

 Jiexuods. 



The koughened Helix. Shell somewhat triangularly 

 orl)icular, rude, irregular, equilateral, nearly equi- 

 valve, radiately densely strongly ridged, ridges very 

 irregidar, for the most part in pairs, prickly scale- 

 serrated ; whitish or yellowish, tinged with violet 

 near the margin, vermilion-red at the umboes ; ears 

 unequal, front ears large, rather fiexuous. 



Adams and Eeeve, Zool. Toy. Samarang, Mollusca, p. 74. 

 pi. 21. f. 13. 



Hah. Corean Archipelago. 



Of characteristic form and sculpture, but rude and irre- 

 arular in arrowth. 



Species 110. (Mus. Cuming.) 



Pecten Patagonicus. Pect. tedd orbiculari, subventri- 



cosd, cequilaterali, subaquivalm, valvis costis mmierosh 

 radiatis, costis valva sinisirce subangustis, versus mar- 

 ginem trifariam divids, interstitiis sub lente mmutis- 

 sime concentrice striatts, valvtB dextrre latioribus, ob- 

 titsis ; alba, costis valvee sinistne alternatim fidvo- 

 aurantiis. 



The Patagonian Pecten. Shell orbicular, rather ven- 

 tricose, eqiulateral, nearly equivalve, valves rayed 

 with numerous ribs, ribs of the left valve rather nar- 

 row, three-divided towards the margin, interstices, 

 beneath the lens, very minutely concentiically stri- 

 ated, ribs of the right valve broader, obtuse ; white, 

 ribs of the left valve alternately fulvous-orange. 



King, Zoological Journal ? 



Hab. Patagonia and Straits of Magalhaens. 



Elegantly characterized by the alternate rayed colouring 

 of the ribs. 



