58 NATURAL HISTORY OF KERGUELEN ISLAND. 



AMPHIPODA. 



ORCHESTIDiE. 



Hyale villoda, Smith, s. n. 



Of this species there is in tlie collection only a single somewhat muti- 

 lated specimen, from which the following description is taken : 



Male : Second and third segments of the peduncle of the antennula 

 subequal in length, very slightly shorter than the first ; flagellum im- 

 perfect. Ultimate segment of the peduncle of the antenna longer than 

 the penultimate, and almost as long as the last two segments of the 

 peduncle of the antennula ; flagellum nearly twice as long as the 

 peduncle, and composed of about seventeen segments ; the last seg- 

 ments of the peduncle and the proximal portion of the flagellum quite 

 thickly villose. 



First pair of gnathopods with the carpus short and triangular ; the 

 propodus not quite twice as long as broad, of the same breadth at each 

 end, the i)almary margin slightly oblique and a little convex in outline, 

 armed with a slender spine on the inside at the rounded i)osterior 

 angle, and clothed with a few hair-like setae, as is also the distal 

 portion of the posterior margin ; the dactylus long and strongly curved, 

 so as to reach round upon the posterior margin. Second pair of 

 gnathopods with the propodus caudate in outline, about five-sevenths 

 as broad as long, and narrowed rajDidly distally ; the palmary and pos- 

 terior margins forming a continuous curve of nearly the same convexity 

 as the anterior margin, densely villose throughout, and armed on the 

 inside, at the tip of the closed dactylns, with a single stout spine ; dac- 

 tylus about half as long as the propodus, stout and strongly curved. 

 Posterior pair of pereopods only slightly longer than the fourth pair, 

 which are considerably longer than the third pair ; the bases of these 

 three pairs, with the posterior margins expanded, evenly arcuate and 

 unarmed. Infero-posterior angles of the second and third segments of 

 the pleon right-angled but not produced. Uropods all short; the bases 

 of the first and second pairs reaching to the same poiut, and the inner 

 rami in both slightly longer than the outer ; third pair about as long as 

 the bases of the second, and with the ramus about as long as the base. 



Length, excluding antennae, nearly 10™™. 



Eocky beaches, Kerguelen Island. 



This species is evidently very closely allied to Hyale hirtipalma (Allor- 



