COKOlMIllDJi. 247 



pair of gnatliopoda small, ha^■ing the propodos oblong, margins 

 nearly i)arallol ; apox trunoatod, and forming llio i)alm ; dactylos 

 longer than the pahn ; carpus a little shorter than the propodos, 

 and hardlj- broader. Second paii" of gnathopoda having the pro- 

 podos very stout, subovate, arcuate above, .straight below, this 

 part (or the palm) a little raised towards the apex, and furnished 

 vrith a few short setio ; dactylos long ; carpus short, not oblong, 

 forming a very narrow process below, between the gnathopoda and 

 the meros ; meros rectangidar below. Foiu'th and fifth pairs of 

 pereiopoda mth the third joint narrow ; seta) longish, those of the 

 l)ropodos shorter than half the length of the joint. 

 "Length 2^3 lines. 



" Hab. From floating kelp, off Manilla, Philippines." — Dana. 



28. Amphithoe Tongensis. (Plate XLII. fig. 10.) 

 Amphithoii Tongensis', Dana, U. S. Explor. Exped. p. 939. pi. G4. f. 3. 



" liody compressed, naked. Coxaj broad. Superior antennae; shorter 

 than the body, base ncarlj' half shorter than the flagellum, second 

 joiat longest ; flagellum about 40-jointed, setse short. Inferior 

 antennae a little the shorter ; base rather longer than the base of 

 the superior, and about half as long as the whole antenna ; inferior 

 setfc of the flagellum longest, longer than the articuli. Gnathopoda 

 slightly unequal and similar, ha\ing the propoda nearly scmi- 

 cUiptical, upper margin almost straight : first pair the smaller : 

 second pair having the propodos more oblong, narrow at apex, 

 hirsute below, palm oblique ; dactylos small, not half as long as 

 the propodos ; cai-pus produced below, process short and quite 

 nan'ow, but not acute. Thi'ce posterior paii's of jjereiopoda very 

 unequal, gradually increasing in length. 



" Length G Unes. 



''Hah. Tongatabu, Pacific; along the shores of coral islets, in 

 shallow water, among sea-weed."— iJana. 



20. Amphithoe peregrlna. (Plate XLIII. fig. 1.) 

 Anipliithoe pcregrina, Ikma, U. S. Explor. Expid. p. 940. pi. 64. f. 4. 

 " Female. — Body somewhat slender. Coxa^ rather broad, edged with 

 four or five short seta; ; fifth pair large. Supeiiur antennae about 

 half as long as the body, first joint longest ; flagellum tAvice the 

 length of the base, twelve-articidated, articuli oblong, seta) short. 

 Inferior antennas nearly half shorter, base longer than base of 

 superior pair, third joint longest; flagellum six-jointed, subulate, 



