1898.] FKOM THE SOUTH PACIFIC. 1011 



expedition, by Messrs. Norman and Stebbing [Tr. Z. S. xii. p. 104 

 (1890)]. 



The colour in this species varies from mottled grey to green, but 

 the colour-variations have no relation to those in form or length 

 of the appendages. 



The table on p. 1010 shows the variations in the spines on the 

 legs of the last pair in the specimens from Eotuma. 



The legs of the third and fourth pairs had two spines on the 

 merus in every case save one. This was a female with only one 

 spine on the left fourth leg. The specimen was among those v\ith 

 one spine on the legs of the fifth pair. 



Erom l\inafuti are two mannoratus-males with two spines on 

 the merus of the last pair of legs, and two females with one 

 spine. 



Eamily Alpheidje. 



Genus Athawas Leach, 1814. 



15. Athaijas sulcatipes, n. sp. (Plate LXV. figs. 9-9 i.) 

 Definition. — "An Athcmas with the rostrum straight, simple, 

 sword-hke, and reaching the end of the second joint of the anten- 

 nular peduncle ; the carapace armed with supra- and infraorbital 

 spines only ; the first antenna with the inner flagellum about 

 twice as long as the outer ; the second antenna with the peduncle 

 somewhat longer than the first two joints of that of the first 

 antenna, the flagellum about as loug as the body, the scale slightly 

 longer than the antennular peduncle and bearing a long fruige ; 

 the third maxillipeds shghtly outreaching the antennal scale ; the 

 first pair of legs unequal, the larger in the male overlapping the 

 antennal scale by the last third of its merus, which is large and 

 deeply hollowed underneath, the wrist in the same limb being 

 short, unarmed, and also hollow underneath, and the hand about 

 as long as the two preceding joints, with the fingers shorter than 

 the palm, apposed, and curved inwards. In the female the longer 

 leg resembles that of the male, but is shorter and less robust. 

 The smaller leg in the male is of the same form as the larger, 

 save that the fingers are curved towards one another and enclose a 

 gap, and reaches about halfway up the hand of the larger leg. 

 In the female, on the other hand, the smaller leg is of a quite 

 simple form, entirely unlike the larger, and reaches to about 

 the end of the merus of the latter. The legs of the second 

 pair have the wrist five-jointed, with the first joint larger than 

 the second, third, and fourth together, the latter three joints 

 equal, and the fifth longer than either of them, and reach, in the 

 male, to the end of the merus of the longer leg of the first pair. 

 The third pair of legs is nearly as long as the second, and the 

 fourth and fifth are subequal, a little shorter than the third. 

 The uropods have the endopodite and expedite subequal and are 

 somewhat longer than the telsou, which ends in a fringe of hairs, 

 and is provided with two pairs of spines on the upper surface." 



