278 



ISOPODA. 



NORMALIA. 



yEGlD^, 



JEQIBjE. 



MGk BICARINATA. 



Specific characte): Animal depressed, terminal segment of the pleon wide 

 at its extremity, bearing on its upper side two diverging carinated lines, 

 which terminate at the posterior angles, the intervening space nearly straight 

 or slightly emarginate. Uropoda with the inner division larger than the outer, 

 truncated at the inner extremity. 



Length, 1^ inch. 



uUga hicannata. Leach, Dictionn. Sci. Nat. xii. p. 349. Desmarkst, 

 Cons. Crust, p. 305. Milne Edwards, Crust, iii. 

 p. 241. CuviER, Regne An. (Edit. Crochard), Crust. 

 t. 67, f. 2. Rathke, in Nov. Acta C^es. Leop. Nat. 

 Curios, vol. XX. pi. 6, f. 1—12. White, B. M. 

 Cat. Brit. Crust, p. 79. Pop. Hist. Brit. Crust. 

 p. 251, pi. xiv. f. 6. GossE, Man. Mar. Zool. 1, 

 fig. 232. 



This is one of the largest species of known Isopods, 



some individuals measuring about one inch and a half in 



length. It is at once distinguished by the two elevated 



divergent lines on the terminal segment of the tail and by 



