430 
COROPHIIDiE. 
AMPHIPODA. PODOCERIDES. 
NATAT0R1A. 
Specific character. Antennae subequal : superior pair one-third as long 
as the animal, the flagellum not being longer than the peduncle : inferior 
pair having the flagellum scarcely longer than the last joint of the peduncle, 
(xnathopoda subequal. Telson in the form of a very perfect hook. 
Length inch. 
Sunamphithoe Hamulus. Spence Bate, Ann. Nat. Hist. 2 ser. xix. p. 148. 
Cat. Amph. Brit. Mus. p. 250, pi. xliii. fig. 5. 
White, Pop. Hist. Brit. Crust, p. 202. 
The eyes are small, round, and black. The antennm 
are nearly of the same length and about one-third that 
of the animal ; in the upper pair the flagellum is about 
the same length as the peduncle ; in the lower pair the 
flagellum is much shorter, not being longer than the last 
joint of the peduncle. The hands of the first two pairs 
of legs are nearly of the same size, the second being 
slightly the larger, and the fingers of both are serrated. 
The first two pairs of walking legs are short and strong ; 
the last three are strong and longer ; the distal extremity 
of the hand being furnished with a palm armed with two 
short, obtuse spines and one long, blunt, spirally-curved 
spine, against which the finger, which is obsoletely 
