58 



tban the succeeding pair. Posterior corner of the last pair of epimeral 

 plates of metasome acutely triangular and not defined from the posterior 

 edge by any incision. First segment of urosonie slightly produced dorsally. 

 Integuments very finely and irregularly reticulated. Eyes about as in H. 

 denticulatus. Superior antennte with the joints of the peduncle less produced 

 anterioi'ly. Infeiior antenna? with the last joint of the peduncle only very 

 little longer than the peiuiltimate one. Anterior gnathopoda comjiaratively 

 more slender than in H. (Icnticnlufits, basal joint longer than tlie meral and 

 corpal joints combined. Dactylus of the ])ereiopoda very slender, nearly as 

 long as the propodos. Last pair of uropoda with the outer ramus a little 

 longer than the inner, terminal joint considerably larger than in H. denticu- 

 latus. Telson comparatively narrower, with 2 or 3 pairs of dorsal denticles, 

 the incision deeper. Body whitish, pellucid, witli dark red ovaries, urosome 

 and oral region partly tinged with crimson. Lengtli of adult female 10 mm. 



Beniarks. — Although very nearly related to H. (IciificitJatns, this 

 species may at once be distinguished by the less produced peduncular joints 

 of the superior antennae, the narrower anterior coxal plates, and especially 

 Ij}' the different form of the posterior projection of the last pair of epimeral 

 plates of the metasome. 



Occurrence. — This species seems to have a more nortliern range than 

 the preceding. The most southern locality where I have met with it is the 

 Trondhjemsfjord. On the other hand, it is very common on the whole coast 

 of Nordland and Finmark up to Vadso. It occurs in depths varying from 

 20 to 100 fms. 



17. Hippomedon Holbelli, (Kroyer). 



(PI. 21,' fig. 2). 

 Anonyx Holhulli, Kroyer, Nat. Tidsskr. 2 R. Bd. 2, p. 6. 



Form of body about as in the two preceding species. Cephalon trans- 

 versally truncated anteriorly, the lateral corners being not at all produced. 

 Coxal plates as in H. propinqvns. Posterior projection of last pair of epimeral 

 plates of metasome triangular, much shorter tlian in that species and, as in 

 the latter, not defined from the posterior edge by any incision. First segment 

 of urosonie with a very conspicirous compressed gibbous projection dorsally. 

 Integuments very distinctly sculptured with close set delicate longitudinal 

 striae partly anastomosing witli each other, the striation being also continued 

 on the peduncle of the superior antennae and partly down the sides of the 

 coxal plates. E,yes with a very conspicuous watchglass-formed lens near the 

 lateral corners. Superior antennae with the joints of the peduncle not at all 



