KONGL. SV. VET. AKADEMIENS HANDLINGAE. BAND. 22. N:0 7. 71 



catched with the hand-net and put into a glass-tube. I had myself the good luck to get 

 two small specimens of this species in a stroke with a surface-net some twenty miles off 

 Barbadoes at Lat. 13° N. during the expedition of H. Swed. M:s Corvette Balder in 1881, 

 under the command of Captain Ansgar Beoberg. In the same stroke it happened to be 

 some specimens of Paraphronima clypeata, three specimens of Phronimopsis Sarsi, one 

 of Synopia caraibica, and three more species of common Hyperids. 



The head is comparatively small, more than three times as high as long, and only 

 a little more high than broad. 



The ocelli are six to eight on each side. 



The first pair of antennas (PI. VI, fig. 14 and 15) are a little longer than the head, 

 very stout and thick. The peduncle is two-jointed, the first joint is robust, almost twice 

 as long as the second. The first joint of the flagellum is short, thick at the base, slowly 

 tapering towards apex, it is only a little longer than the peduncle; the inner side and 

 the lower margin are richly provided with stout, »olfactory» bristles, articulating on pro- 

 minent, button-like tubercles; the upper and under margins are smooth, not serrated; the 

 last three flagellar joints together are half as long as the first joint; the second flagellar 

 joint is the shortest, armed with one »olfactory» bristle, the third joint is twice as long 

 as the second, carrying two long, sharp-pointed bristles at the lower anterior corner, the 

 fourth joint is shorter than the third, wider at apex, provided with two very long, sharp- 

 pointed, bristle-like hairs, somewhat curved. 



The second pair of antenna? (PL VI, fig. 14) are almost as long as the peduncle of 

 the first pair, four-jointed; the first joint is the broadest, but much shorter than the se- 

 cond, which is the longest, the third and fourth joints are equal in length, the last tapering, 

 tipped with two minute bristles. 



Beneath the bases of the first pair of antennae there is on each side a rounded pro- 

 tuberance, with a circular hole at the summit, similar to that mentioned in Mimonectes 

 Loveni. 



The perceon. The top of the globe is formed by the third segment alone. The 

 dorsal margin of the second segment is much the longest, fully twice as long as that of 

 the first segment, and more than four times as long as its own under margin; the 

 seventh segment is the shortest. The circular under surface of the globe is bordered by 

 the under margins of the head and of all the peraeonal segment, and by the under margin 

 the first pleonal segment, which however does not participate in forming the globe. 



The epimeral of the first pair is the longest, as long as the under margin of the 

 segment, that of the second pair equals two thirds of the length of the under margin of 

 the segment, those of the third, fourth and fifth pairs are scarcely as long as half the 

 corresponding segment, that of the sixth pair is almost as long as the segment, the epi- 

 meral of the seventh pair is very short. 



The branchial sacks (Pi. VI, fig. 17) are longer and somewhat broader than in the 

 preceding species, attached to the second to sixth pairs of perceopoda. They are much 

 longer than the femora of the corresponding pairs, each longer than two thirds of the 

 length of the whole leg. That of the second pair is scarcely three times as long as broad. 



