UROTHOE MARINUS. 



AMPHIPODA. 



NATATORIA. 



195 



PlIOXIVES. 



UROTHOE MARINUS. 



Specific cltaracter. Superior antennte longer than the inferior. Inferior 

 antennns having the flagellum uniarticulate. Second pair of gnathopoda 

 with the palm slightly ohliqne. Both branches of the terminal caudal ap- 

 pendages plumose. 



Length \l inch. 



Urothoe marinus. Spence Bate, Cat. Amph. Brit. Mus. p. 145, pi. xix. 



fig. 2. 

 Sidcator marinus. Spence Bate, Synop. Brit. Amph. Ann. Nat. Hist. ser. 



2, xix. p. 140, Feb. IS-*)?. White, Hist. Brit. Crust. 



p. 175. 



This species bears a close resemblance to the preceding 

 in its general aspect, but may readily be detected from it 

 by the shortness of the inferior antennae. The superior 

 antennas are about one-fourth of the length of the 

 animal, and have a flagellum scarcely longer than the 

 last joint of the peduncle. The inferior antennas 

 scarcely reach beyond the extremity of the peduncle 

 of the superior. The first joint of the peduncle is 

 surmounted by three longitudinal rows of spines, each 



o 2 



