oammvbid.t:. RP 



Two very tninuto s])Ccimons were sent to mc 1)}' my friend M r. .1 . 

 Crwvii Jetfreys, who took them on the shores of riedmont. Tliis 

 species is named in honour of Kisso. 



15. URISTES. 

 Urist«s, Dana, U. S. Explor. ExpccJ. p. 917. 

 " Body compressed. Coxae hroad. Antcnnoc of moderate length ; the 

 superior with a stout base, not appendieulate. First pair of gna- 

 thopoda subcheliform ; second vergiform, ending in a long styliform 

 joint ; third and fourth vciy short; the remaining similar, and of 

 moderate length." — Dana. 



The mandibles arc described as having the incisive c<Jgc denticu- 

 lated. 



1. Uristes ^gas. (Plate XIV. fig. 8.) 

 Uristes gigaa, Dana, U. S. Explor. Exped. p. 917. pi. 62. f. 3. 



" Antenna) subequal, rather stout, not half as long as the body ; the 

 superior pair having the flagcllura very short-jointed, and fringed 

 below with short obtuse processes ; the inferior somewhat the 

 longer, the flagcllum having minute triangular processes along the 

 upper margin. Eyes reniform. First paii' of gnathopoda shorter 

 than second ; propodos of the first pair oblong ; apex oblique ; 

 margins nearly parallel ; dactylos short ; second pair five -jointed*, 

 the last joint long, styliform. The fifth pair of perciopoda shorter 

 than the fourth ; antepenultimate segment of pleon acute behind. 



" Length 9 lines. 



'* Taken from the stomach of a fish in the Antarctic Seas." — Dana. 



Dana has placed his genus Uristes immediately next to Opis, form- 

 ing with it a division in his siibfamily LYsiANASSiNOi, the pecidiar 

 characters of which are, tliat the first pair of gnathopoda are sub- 

 chelate, the second simple. Kroyer's figure of Opis evidently re- 

 presenl^s the second pair of gnathopoda as formed upon the same 

 type a.s in Lijsianassa and Anowf.r, and therefore is minutely sub- 

 chelate. The author says that in UriMes it terminates in a long 

 styliform propodos, the dactylos being wanting. It cannot be pre- 

 sumed but that so acute and able an observer as Dana must have 

 described the genus accurately ; but it is evident that in his figure 

 the first pair of perciopoda have been drawn for the second pair of 

 gnathopoda. The gnathopoda are distinguished from the jierciopoda 

 by ha\-ing the propodos articulated with the carpus near the anterior 

 margin, whereas in the perciopoda it articulates nearer to the pos- 



» TliP coxjp not coiintofl. In the fifj^niT, Dana lias drawn one of tlio first pair 

 of piToiopocla instead of the second pair of (,'"«• l'r»I^"'l''- I'hi' incros ri/wni/s 

 ovcrridcB the carpus in the poreiopoda, and midcrridcs it in thn [rnathoiiofln. 



