CALLIOPE L7EVJUSCULA. 
259 
AMPH1PODA. GAMMARIDES. 
NATATORIA. 
Specific character. Eyes tolerably large. Superior antennae having 
the third joint of the peduncle infero-distally produced to a short tooth. 
Gnathopoda having the propoda large, oval, and robust. 
Length \ inch. 
Amphithoe Iceviuscula. Kroyer, Gronl. Amph. p. 53, t. 3, fig. 13. Milne 
Edwards, Hist, des Crust, t. 3, p. 30. Bell, 
Append. Belcher’s last Arctic Yoy. p. 405. 
Calliope Leachii. Spence Bate, Rep. Brit. Assoc. 1855, p. 58. Ann. 
Nat. Hist. 2 ser. xix. p. 142 (Feb. 1857). Cat. 
Amph. Brit. Mus. p. 148, pi. xxviii. fig. 2. 
White, Pop. Hist. Brit. Crust, p. 179. 
The head is produced anteriorly to a small point be- 
tween the superior antennae. The first three segments 
of the tail have the posterior margin a little elevated in 
some specimens. The fourth segment has a broad but 
not deep depression, which appears to receive the pos- 
terior margin of the third segment when the animal is 
extended. The eyes are black, and tolerably large and 
irregularly round. The antennae are nearly of the same 
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