AMPHIPODA. 



NATATORIA. 



PHOXUS HOLBOLT.T. 



143 



PHOXTDES. 



PHOXUS HOLBOLLI. 



Specific character. Superior antennae having the pednncle reaching as 

 far as the extremity of the cephalon ; flagellum as long as the peduncle ; 

 secondary appendage half as long as the primary. Inferior antennae scarcely 

 longer than the superior. Gnathopoda subequal ; propoda quadrate ; palm 

 but slightly oblique ; three anterior coxaB having each five simple hairs upon 

 the inferior margin, towards the hind-angle. 



Length j inch. 



Plw.vus Holbolli. Kroyer, Tidsk. vol. iv. p. 150. Spence Bate, Svoiop. 

 &c. Ann. Nat. Hist. Feb. 1857, p. 58. Cat. Amph. 

 Brit. Mus. p. 98, pi. xvi. fig. 2. White, Hist. Brit. 

 Crust, p. 173. 



The general appearance of the animal much resembles 

 that of P. simplex, but the antennaD are longer, the su- 

 perior pair are nearly as long as the head, and extend 

 considerably beyond the extremity of the cephalon ; the 

 peduncle reaches quite to the anterior margin of the pro- 

 jecting hood ; the first joint of the peduncle is tolerably 

 long, but almost hid beneath the -\valls of the head ; the 



