WALKER—AMPHIPODA GAMMARIDEA. 337 
Perzeopods 4 and 5 subequal, nearly twice as long as per. 8; 4 with hind margin of 
2nd joint slightly concave; in 5 very convex, obscurely serrate. Dactyli powerful, 
with 5 spines. 
Uropod 3 extending beyond 2, the outer ramus twice as long as the inner and sub- 
equal to the peduncle, with a cluster of spines on the outer margin. 
Telson hardly as long as the peduncle of uropod 3, wider than long, deeply cleft, ends 
of divisions squarely truncate with rounded angles and 3 long submarginal spines. 
Length of male 6 mm. 
This species may be easily recognized by the pectinate dactyli of the pereeopods and 
the large gnathopods 2 in the female: also the peculiar form of the hand in gnathopod 2 
of the male. In one specimen there is a kind of tumour on both of these. 
The above was written before I received the description which M. Chevreux was good 
enough to send me. 
Genus POLYCHERIA, Haswell, 1879. 
32. Polycheria atolli, A. O. Walker. 
I. Egmont Lagoon. Two ¢,one @: length 3:5 mm. 
II. Wasin, mud, 10 fms. Several. 
The chief difference between this species and P. antarctica (Stebbing) is in the form 
of the last joint of the palp in maxilla 1, which tapers almost to a point in the latter, 
while it is squarely truncate in P. atoll. 
Genus HYALE, Rathke, 1837. 
33. Hyale macrodacty la, Stebbing. 
I. Egmont reef and lagoon: several. Praslinreef: several. Coetivy: afew. Length 
of female 5 mm. 
This is the form described by Chevreux from the Seychelles. 
34. Hyale brevipes, Chevreux. 
Hyale nilssoni, A. O. Walker, Nat. Hist. Sokotra &c. 1903, p. 219, pl. xiv. a, figs. 3, and Reporu of 
Pearl Oyster Fisheries, Amphipoda, 1904, p. 238. 
III. (No locality.) Several, ¢, 2, and young: length 5 mm. 
Genus LEMBOS, Bate. 
35. Lembos kergueleni (Stebbing). (Plate 48. fig. 6.) 
I. Cargados, B 25, 22 fms. Three imperfect. 
II. Wasin, mud, 10 fms. ‘Twelve. 
Antenna 1 (wanting in the ‘ Challenger’ specimen) much longer than ant. 2, about 
as long as two-thirds of the animal, slender; 2nd joint much longer than the Ist and 
three times as long as the 3rd; flagellum has more than 21 joints ; accessory flagellum 
6-jointed, reaching beyond the end of the 6th joint of the flagellum. 
SECOND SERIES.—ZOOLOGY, VOL. XII. 46 
