AMPHIPODA. 31 



first pair of side-plates are produced in front to a rounded acute angle ; the eyes are 

 dark brown (in spirit) instead of light red ; the antennae have longer and more slender 

 rlagella, and the telson is less deeply divided. The two last characters, however, vary 

 with age ; thus the telson in an adult female is like that of E. minutus as figured by 

 Sars, while in an immature specimen it resembles that of E. ciixjiiilttfiix, Kr. 

 In the large number of specimens taken but few are adult, viz. : 



1 male, length 50 mm., W.Q., 25 April, 1903, Hole 8, 10 fm. 

 1 female, with young, length 48 mm, W.Q., 25 Mar., 1903, Hole 8, 10 fm. 

 1 female, with ova, length 48 mm., W.Q., 31 Mar., 1903, Hole 4, G fm. 

 1 female, with ova, length 48 mm., W.Q., May, 1903, Hole 8, 10 fm. 



In all probability this species, like our own Gammarelltis (Amathilla) Itomnri, Fabr., 

 inhabits deep water when full grown, only coming to shallow water to deposit its young, 

 which are hatched in the brood pouch. 



Mr. Hodgson writes : " This species occurred constantly in the traps, but in small 

 numbers. I therefore soon ceased to preserve specimens, unless I could get them in 

 good condition, and as their length of leg rendered this difficult, occasional specimens 

 occur in the collection from most periods of the year. As far as I recollect, the adults 

 with ova or young were only taken in the summer or autumn." 



E. MICROPS. (PI. 11, fig. 19.) 

 E. microps, A. 0. Walker, Ann. and Mag. Nat. Hist. XVIII. (190G), p. 152. 



W.Q., Hole 8, 10 fm., 10 May, 1903, one, length 25 mm., and 1 June, 1903, one, 

 length 30 mm. ; Penguin Rookery, Mount Erebus, Feb., 1904, one, length 48 mm., in 

 bad condition. 



Last segment of the mesosome and first two of the pleon carinate, with a postero- 

 dorsal tooth. Third pleon segment with the cariua rounded behind, hind margin 

 rather convex, finely crenate in adult, the posterior angle a little produced and acute 

 with a row of five or six intramargiual spines on the lower margin in front of it. 



Urus with the first segment dorsally depressed. 



S'uli' i>l<it<-N small, the first subquadrate, not wider below ; the next three sub- 

 triangular, the apex below ; all rather deeply and irregularly creuate on the lower margin. 



Head subequal to the first segment ; ocular lobe not prominent, truncate. Eyes 

 dark, almost round, diameter less than that of the first joint of the upper antennae. 



Upp'-r uiifi'iiiife reaching the base of the uropods ; first joint about three-fourths of 

 the length of the second, with a distal prominence on the lower margin terminated by 

 a very sharply pointed tooth with a spine and a few setae behind it ; the second joint 

 expands at the distal end, where there are two or three acute teeth ; the third is 

 sul (equal to the first of the Hagelluni. Secondary appendage as long as, and closely 

 adherent to, the first joint of the fiagcllum. 



VOL. HI. I 



