PECTEN ISLANDICUS. 



SPECIFIC CHARACTER. 



Shell suborbicular, with numerous rays -, orange or ru- 

 fous, with darker concentric bands, 



SYNONYMS. 



OsTREA isLANDicA, Mulkr^ Chemti. and Mart. Conch. 

 vol. 7, p. 3 14, and 318, pi, 6.3, fig. 615 and 616, GmeL 

 Lam. an. sans vert. p. 474. DesJu EncycL Melh. p. 724, 

 pi. 212, fig. 1. 



OSTREA CINNABARINA, Bom. 3IllS. p. 103- JDUiw, Cu- 



tal. p. 256. 

 Pecten I'EALEH, Vonrttd, Murine Cavch. p. 1 2, pi. 2,f. 2. 

 Lister Conch, pi, 1057, fig. 4. (The ears are rejTesent- 

 ed as being equal.) iSeba Mus. pi. 87, fig. 7. Olcffsm, 

 Voyage, pi. 10, fig. 1, (Huitre.) 



DESCRIPTION. 



Shell with very numerous, elevated, somewhat scaly ra- 

 diating lines, alternately smaller, incrt-a^ing in number ac- 

 cording to the growth of the shell to upwards of an hun- 

 dred ; intervals reticulated ; ears unequal, beneath the 

 emarginated one are five or six little teeth ; valves not ve- 

 ry unequal, of a reddish or orange coloi;r, >vilh many con- 

 centric darker bands and about thi«^(: paler radii ; on the 

 flatter valve the colours are much paler ; edge jagged with 

 the produced elevated lines : within the convex valve is a 



PI. 56. 



