79 



as broad. Last pair of epimeral plates of metasome rectangular, posterior 

 edge straight. First segment of iirosome exhibiting, as in T. Horrinyii, a rather 

 high and compressed dorsal projection, the tip of which, however, is distinctly 

 biangular. Eyes very large, nearly occupying the entire height of the cepha- 

 lon, narrow oblong in form, pigment light red. Superior antennae very slender, 

 with the peduncle narrower than usual; flagellum nearly twice its lengtlr 

 setous on the lower edge and 14-articulate, 1st joint scarcely as long as the 

 3 succeeding ones combined; accessory appendage about equalling '/s of the 

 length of the nagellum and composed of 5 articulations, the first of which 

 hardly exceeds in length the 2nd. Inferior antennas in female a little longer 

 than the superior, flagellum 15-articulate. Epistomal plate considerably pro- 

 jecting and quite evenly rounded in front. Anterior gnathopoda of the usual 

 slender form, propodos scarcely as long as the carpus, palmar edge oblique, 

 dactylus with a conspicuous secondary denticle. Posterior gnathopoda with 

 the propodos about as broad as the carpus. Pereiopoda rather slender, basal 

 joint of last pair large, oval in form. Last pair of uropuda with the inner 

 ramus scarcely longer than the basal joint of the outer and provided on tin- 

 inner edge with a single denticle. Telson oblong oval, gradually tapering 

 distally, with 3 or 4 pairs of dorsal denticles, cleft very narrow, fissure-like, 

 and extending considerably beyond the middle. Colour pale reddish. Length 

 of adult female 7 mm. 



Remarks. Though in some points closely agreeing with T. HorrimjiL 

 this pretty species is at once distinguished both from that species and from 

 T. nana by the peculiar angulated form of the lateral corners of the cephalon, 

 as also by several other characters named in the above diagnosis. 



Occurrence. The range of this species would seem to be more north- 

 ern than that of the 2 preceding ones. I have found it rather sparingly in a 

 few places off the coast of Nordland and Finmark and quite recently more 

 plentifully in the Trondhjemsfjord. It is a true deep water species, only oc- 

 curring in depths varying from 100 to 150 fathoms. 



32. Tryphosa nanoides, (Lilljebori; 



(PI. 28, fig 2.) 

 Anonyx nanoides, Lilljeborg, On the Lysianassa magellauica etc., p. 25, PI. Ill, lit,'. 32 



Body rather slender and highly compressed. Cephalon scarcely longer 

 than the 1st segment of mesosome, lateral corners but slightly projecting and 

 rounded at the tip. Anterior coxal plates fully twice as deep as the body ; 

 1st pair with the anterior edge straight, 4th pair considerably expanded l>e- 



