168 GAMMARIM. 



AMPHIPODA. PHOXIDES. 



NATATORIA. 



MONOCULODES STIMPSONI. 



Specific character. Pleon not carinated ; thighs of the sixth pair of legs 

 not plumigeous. 

 Length, ^ inch. 



Monoculodes Stimpsoni. SPENCE BATE, Cat. Amph. Crust. Brit. Mus. 

 p. 105, pi. xvii. fig. 3. 



THE back of the animal has no perceptible carina. 

 The head is advanced and depressed, but scarcely so 

 much curved as in M. carinatus. The eye is undefined, 

 and situated above, and rather in advance of, the point 

 where the antennae articulate with the head. The su- 

 perior antennae reach rather beyond the peduncle of the 

 inferior; the first joint of the peduncle extends as far 

 as the extremity of the head; the second joint is 

 rather more than half the length of the first, and much 

 slighter ; the third joint is small, being scarcely a third 

 the length of the second ; the flagellum is slender, and 

 scarcely the length of the peduncle. The inferior pair 

 of antennae are one- third longer than the superior, and 

 reach as far as the seventh segment of the body ; the 

 first two joints are covered by the coxae of the first pair 



