MARINE GAMMARIDEAN AMPHIPODA 273 



Accessory flagellum a short, 1-articulate scale; article 3 of antenna 

 1 equal to or longer than article 1; gnathopods subchelate, gnathopod 

 1 occasionally poorly so; uropod 3 apparently biranaous, rami sub- 

 equal to each other and to peduncle. Species: 2, Kerguelen Island 

 and California, littoral to bathyal (1,152 m). 



Kuphocheira K. H. Barnard 



Kuphocheira K. H. Barnard, 1931; 1932. 



Type-species: K. setimanus K. H. Barnard, 1931 (original des- 

 ignation); 1932. 



Accessory flagellum absent; [article 3 of antenna 1 undescribed]; 

 gnathopods simple, dactyl of gnathopod 2 reduced in size and setose; 

 uropod 3 uniramous, ramus shorter than peduncle. Species: 1, S. 

 Orkney Islands, littoral. 



Megamphopus Norman 



Megamphopus Norman, 1869a. — Stebbing, 1906. 

 (Segamphopus) J. L. Barnard, 1962a [subgenus]. 



[Bonnierella Chevreux, 1900], as possible synonym, but also assigned to Ischyro- 

 ceridae. 



Type-species: M. cornutus Norman, 1869a (original designation). 

 See Sars, 1895. 



Accessory flagellum 1- or 2-articulate, article 1 elongate; article 3 

 of antenna 1 equal to or longer than article 1; gnathopods subchelate, 

 occasionally poorly; uropod 3 biramous, rami subequal to each other, 

 longer than peduncle. Species: 15, biboreal, Httoral to bathyal 

 (385 m). 



Subgenus Bonnierella Chevreux (1900): Like Megamphopus but 

 article 2 of pereopods 3-5 with parallel edges. This subgenus also is 

 assigned as a genus to the Ischyroceridae. Species: 5, bathyal to 

 abyssal. 



Subgenus Segamphopus J. L. Barnard (1962a) : Like Megamphopus 

 but article 5 of gnathopod 2 at least 1.6 times as long as article 6. 

 Species: 1, S. Georgia Island, littoral. 



Microphotis Riiifo 



Microphotis RufTo, 1952. 



Type-species: M. blachei Ruffo, 1952 (monotypy). 



Accessory flagellum absent; article 3 of antenna 1 equal to article 

 1; gnathopods subchelate; uropod 3 uniramous, ramus shorter than 

 peduncle. Species: 1, S. China Sea, littoral. 



