56 



projecting and somewhat depressed, minutely spinulose laterally, and terminating 

 in a conical point; subrostral corners obsolete. Exposed part of trunk with 

 scattered spiniform projections, two of which on each of the 4 anterior segments 

 are very conspicuous, forming together dorsally a double longitudinal row, last 

 segment with a median spine above, its lateral parts but slightly produced be- 

 hind, terminating in an acute corner. Caudal segments with the lateral corners 

 produced in a similar manner to that in D. Goodsiri, and moreover coarsely 

 denticulate. Eye inconspicuous. Superior antennae with the peduncle scarcely 

 extending beyond the tip of the pseudorostral projection, its 1st joint longer 

 than the other 2 combined. First pair of legs of moderate length, basal joint 

 spinulous in its distal part, penultimate joint somewhat longer than both the 

 preceding and succeeding joints; 2nd pair with the basal, ischial and meral joints 

 spinulous, antepenultimate joint scarcely longer than the last 2 combined; 3rd 

 and 4th pairs rather strong, with the basal joint partly denticulate. Uropoda 

 with the rami somewhat exceeding half the length of the stem, the inner one 

 having the joints well defined, the 1st being somewhat shorter than the other 2 

 combined; spinules of the inner edge of usual appearance and about 8 in number 

 (4 on the 1st, and 2 on each of the last 2 joints), apical spine rather slender. 

 Telson very much produced, extending far beyond the stem of the uropoda, prox- 

 imal thickened part occupying somewhat more than 1 / 3 of the length, distal part 

 armed on each side with about 8 spinules, apical spinules somewhat thicker, but 

 scarcely longer than the lateral. Colour pale carneous. Length 18 mm. 



Remarks. This form was first described under the above name by Heller 

 from specimens procured at Franz Joseph Land during the Austrio-Hungarian 

 Expedition. It is one of the largest known Cumacea, and clearly distinguished 

 by the coarse spiny armature of the body. The form described by the present 

 author from a single young male specimen procured during the Norwegian North 

 Atlantic Expedition as D. nodosa, is very nearly allied to the present species, and 

 is even regarded by Dr. Hansen as merely a variety of D. spinulosa. 



Occurrence. A few specimens of this beautiful form were taken by the 

 present author, many years ago, in the Varanger Fjord at Vads0, from a depth 

 of about 100 fathoms. During the Norwegian North Atlantic Expedition 2 other 

 specimens were found at about the same depth in the Porsanger Fjord. These 

 are the only localities of the Norwegian coast where this species has hitherto 

 been found. Among the specimens procured are also 2 young males, and both 

 af these agreed exactly with the females as regards the armature of the carapace. 

 Distribution. Franz Joseph' Land (Heller), the Barents Sea (Hoek), the 

 Kara Sea (Stuxberg), Greenland (Hansen). 



