58 



tli an 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 urosome slightly produced dorsally. 

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

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

 anteriorly. Inferior antennae with the last joint of the peduncle only very 

 little longer than the penultimate one. Anterior gnathopoda comparatively 

 more slender than in H. denticulatus, basal joint longer than the meral and 

 corpal joints combined. Dactylus of the pereiopoda very slender, nearly as 

 long as the propodos. Last pair of uropocla with the outer ranras 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, with dark red ovaries, urosome 

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



Remarks. Although very nearly related to H. denticulatus, this 

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

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

 by 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 northern range than 

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

 Trondlijemsfjord. 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 fins. 



17. Hippomedon Holbelli, (Kroyer). 



(PI. 21, fig. 2). 

 Anonyx Holbolli, 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. propinqvus. Posterior projection of last pair of epimeral 

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

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

 of urosome with a very conspicuous compressed gibbous projection dorsally. 

 Integuments very distinctly sculptured with close set delicate longitudinal 

 stria? partly anastomosing with each" other, the striation being also continued 

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

 coxal plates. Eyes with a very conspicuous watchglass-formed lens near the 

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



