78 



urosome deeply impressed at tlie base dorsallj' and having besides a very 

 conspicuous compressed hnmp-like jirojection angularly ]3roduced at the tip. 

 Eyes much larger thaii in the preceding species, oblong oval, somewhat wide- 

 ning below, pigment light red. Superior antennae with the peduncle compara- 

 tively thicker than in T. nana ; flagellum rather slender, about twice the length 

 of the peduncle, 11-articulate, 1st joint larger than in the latter sjDecies; ac- 

 cessory ajjpendage half the length of the flagellum, 6-articulate, 1st joint the 

 lai'gest. Inferior antennae in female scarcely longer than the superior, flagel- 

 lum 13-articulate. Epistome considerably more projecting than in T. nana 

 and rounded in front. Anterior gnathopoda more slender than in the latter 

 species, projiodos shorter than the carpus and nearly transversel_)- truncated 

 at the tip, with 2 very conspicuous spines on the inferior corner. Posterior 

 gnathopoda likewise rather slender, propodos oblong oval and scarcely as bnjad 

 as the carpus. Pereiopoda comparatively stronger than in T. nana, basal joint 

 of the last pair very large, rounded quadrangular. La.st pair of uropuda 

 nearly as in the latter species, though the inner ramus appears a little 

 larger. Telson oblong oval, slightly tapering distally, with 3 pairs of dorsal 

 denticles, cleft very deep, almost extending to the base. Colour pale reddish 

 or carneous. Length of adult female 7 mm., of male 6 nim. 



BemorJcs. — The present species is nearly allied to the preceding one, 

 from which, however, it is readily distinguishable by the very conspicuous 

 triangular projection of the 1st segment of the urosome, as also by the larger 

 size of the eyes. 



Occurrence. — Unlike the preceding form this species is a true deep 

 water form, occurring only in greater depths from 50 to 150 fathoms, especi- 

 ally in tlie region of the deep jsea corals. I have collected it in several 

 partes of tlie west coast of Norwav up to l^iofoten, as also in the Trdnd- 

 hjem.sijoi'd. 



Disfrihiffion. — East eoa.st of North America, Lalirador (Packard); 

 Itpinnnrlc (Moinei't) ;Bohuslan (Gnnhild's Kx])editi(in). 



31. Tryphosa angulata, (I. 0. Sars, n. sp. 



(PI. 28, fig. 1.) 

 Body somewhat slmrter and stouter than in the 2 preceding species. 

 Cephalon rather deep, lateral corners distinctly angular and drawn out at the 

 tip to a short anterior directed tooth-like ])rojection. Anterior coxal plates 

 scarcely twice as deep as the body; 1st pair distinctly concaved anteriorly, 

 41 li jiair aiignlarly pnidnced below tlic ciiiargination, 5th pair about as deep 



