PHOXUS HOLBOLLT. 



143 



AMPH1PODA. 



NATATORIA. 



PHOXIDES. 





PHOXUS HOLBOLLI. 



Specific character. Superior antennae having the peduncle reaching as 

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

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

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

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

 the inferior margin, towards the hind-angle. 



Length | inch. 



Phoxus HolbolU. KKOYEK, Tidsk. vol. iv. p. 150. SPENCE BATE, Synop. 



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

 Brit. Mas. 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 antennae 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 walls of the head ; the 



