AMPHIPODA. 3] 
first pair of side-plates are produced in front toa rounded acute angle ; the eyes are 
dark brown (in spirit) instead of light red ; the antennee have longer and more slender 
flagella, 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 FE. minutus as figured by 
Sars, while in an immature specimen it resembles that of /. cuspidatus, Kr. 
Tn 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, 6 fm. 
1 female, with ova, length 48 mm., W.Q., May, 1903, Hole 8, 10 fm. 
In all probability this species, like our own Gamimarellus (Amathilla) homari, 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 | 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.” 
HK. microps. (Pl. 11, fig. 19.) 
£. microps, A. O. Walker, Ann. and Mag. Nat. Hist. XVIII. (1906), 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 carina 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 intramarginal spines on the lower margin in front of it. 
Urus with the first seoment dorsally depressed. 
Side plates small, the first subquadrate, not wider below; the next three sub- 
triangular, the apex below ; all rather deeply and irregularly crenate on the lower margin. 
Head subequal to the first segment ; ocular lobe not prominent, truncate. Kyes 
dark, almost round, diameter less than that of the first joint of the upper antenne. 
Upper antennz 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 sete behind it; the second joint 
expands at the distal end, where there are two or three acute teeth; the third is 
subequal to the first of the flagellum. Secondary appendage as long as, and closely 
adherent to, the first joint of the flagellum. 
VOL, Ill, 
