318 



PEN/HAD/I-; 



DEC A I'D DA. 



M.iCnOUUA. 



I'ENjh'.ADJE. 



Penccus Caramote. Desmar. 



Specific character. — Filaments of the internal antennre shorter than the last two 

 ai'ticulations. Thorax trisulcate posteriorly ; rostrum bent downwards, above 

 niultidentate. 



AljihtBus caramote 

 I'eiucus „ 



trisidcatus 



Risso, Crust, de Nice, p. "20. 



Desmar. Consider, sur les Crust, p. 225. — Risso, Hist. 



Nat. de I'Eur. Mer. V. p. 57. — Edw. Hist, des 



Crust. II. p. 413. 

 Leach, Mai. Brit. t. xlii. 



The carapace is large and somewhat ventricose ; the 

 rostrum extending to the peduncle of the internal antennai, 

 armed above with numerous (about twelve) rather strong 

 teeth, and beneath with one or two points only, the latter 

 placed a little in front of the line of the eyes ; on each 

 side of the rostrum is a crest, which is continued back- 

 wards to near the margin of the carapace, thus forming 

 a deep groove on each side of the median crest of the 



