304 



AMPHIPODA. 



NAT ATOM A. 



GAMMAR1D7E. 



OAMMAR1DES. 



BATHYPOREIA PILOSA. 



Specific character. Inferior antenna? not half the length of the animal ; 

 flagellum not longer than the peduncle, consisting of six or seven unequal 

 articuli. Fourth segment of the tail with a transverse sinus. 



Length 5 2 g inch. 



Bathyporeia pilosa. Lindstrom, Ofvers. Kongl. Yet. Akad. Forhandl. 



1855, p. 59. Nat. Hist. Review, Jan. 1857, 

 fig. c. White, Pop. Hist. Brit. Crust, p. 188. 

 Spence Bate, Cat. Aniph. Brit. Mus. p. 172, 

 pi. xxxi. fig. 4. 

 Spence Bate, Rep. Brit. Assoc. 1855, p. 59. 

 Ann. Nat. Hist. 2 ser. xix. p. 146. 



Thersites Guilliamsonia, 



The superior antennas have the first joint very broad, 

 and longer than the head : the second joint is very 

 short and narrow ; it articulates with the first subapically 

 upon the inferior surface : the third joint is still 

 shorter and narrower than the second : the flagellum 

 is about the same length as the peduncle ; the first 

 articulus being longer than the last joint of the ped- 

 uncle, the remaining four or five being of irregular 



