MARINE GAMMARIDEAN AMPHIPODA 343 



chelate, thumb narrow; article 7 of gnathopod 2 rather large and 

 curved; coxa 1 short, nearly hidden by coxa 2; telson of medium 

 length, deeply cleft. Species: 7, cosmopolitan, epi- to bathypelagic. 



Eurythenes Smith 



Eurytenes Liljeborg, 1865 (homonym, Hymenoptera). 

 Eurythenes Smith, 1884.— Stebbing, 1906. 

 Euryporeia Sars, 1895. 

 Katius Chevreux, 1905c. 



Type-species: Gammarus gryllus Lichtenstein, 1822 (monotypy). 

 See Sars, 1895. 



Article 1 of antenna 2 tumid in adults; epistome broadly lobate 

 in front of upper lip; mandibular molar immense, extremely broad, 

 laminate, apically ridged, palp attached level mth molar; gnathopod 

 1 subchelate, article 7 overlapping palm, article 6 longer than 5, 

 article 3 not elongate {Paralicella) ; coxa 1 shortened, partially con- 

 cealed by coxa 2; telson long, deeply cleft. See Aristias. Species: 

 2, cosmopolitan, bathyal to abyssal. 



Figorella J. L. Barnard 



Figorella J. L. Barnard, 1962d. 



Type-species: F. tanidea J. L. Barnard, 1962d (original desig- 

 nation) . 



Accessory flagellum 1-articulate; [upper lip and epistome not 

 described]; mandibular molar absent, palp attached rather distally; 

 palp of maxilla 1 uniarticulate; gnathopod 1 slightly chelate, article 

 6 somewhat enlarged, much longer than article 5; uropod 3 very 

 short, inner ramus shortened; telson short, apparently entire. 

 Species: 1, S. Atlantic, abyssal. 



Gainella Chevreux 



Gainella Chevreux, 1911c; 1912a; 1912b. 



Type-species: G. chelata Chevreux, 1912a, 1912b (designated by 

 Chevreux, 1912a). 



Epistome and upper lip not differentially produced; mandibular 

 molar small but ridged, palp attached proximal to molar; inner 

 plates of maxilliped styliform, palp very long, slender, article 4 

 densely setulose apically; gnathopod 1 chelate, thumb narrow and 

 short, article 6 much longer than 5; gnathopod 2 styliform but mi- 

 nutely chelate; uropod 3 short, inner ramus a short scale, one third 

 as long as outer ramus; telson short, deeply cleft. Species: 1, antarc- 

 tic, Httoral (297 m). 



