MONOCULODES. 
163 
AMPHIPODA. PHOXIDES . 
NAT ATOM A, 
Genus— MONOCULODES. Stimpson. 
Monoculodes. Stimpson, Marine Invert. Grand Manan, p. 54. Spence 
Bate, Gat. Ampb. Crust. Brit. Mus. p. 104. 
Westwoodea (pars). Spence Bate, Rep. Brit. Assoc. 1855, p. 58. 
Kroyera. Spence Bate, Synop. &c. Ann. Nat. Hist. Feb. 1857, 
2 ser. xix. p. 140 (but not of this work). 
Generic character. Cephalon produced and depressed ante- 
riorly. Eyes coalesced into one, situated above and anterior to 
the superior antennae. Superior antennae without a secondary 
appendage. Gnathopoda subchelate, carpi antero-distally pro- 
duced to the extremity of the inferior margin of the propoda. 
First pair more robust than the second. Second having the 
propodos longer than the propodos of the first pair. Posterior 
pair of pereiopoda much longer than the others. Posterior pair 
of pleopoda biramous. Telson squamiform, entire. 
The head is rounded above, and the anterior dorsal 
surface is considerably produced and depressed. The 
eyes are deep-seated, converging together, so as to ap- 
pear to be but a single organ, placed horizontally above, 
and still more forward than the base of the superior pair 
of antennae. The antennae are simple in their character, 
the superior pair not being furnished with a secondary 
appendage. The mandibles are furnished with an ap- 
pendage. The first two pairs of legs are complexly 
subchelate, having the wrist produced anteriorly along 
the inferior margin of the hand, which is much longer 
and not so broad in the second as in the preceding pair 
of legs. The last pair of legs are considerably longer 
than any of the other pairs, and terminate in a long 
M 2 
