MARINE GAMMARIDEAN AMPHIPODA 271 



Genera of Isaeidae 



Antpelisciphotis Pirlot 



Ampelisciphotis Pirlot, 1938. 



Type-species: A. tridens Pirlot, 1938 (original designation). 



Lateral cephalic lobes and article 6 of pereopods 1-2 elongate {com- 

 bining character); accessory flagellum absent; article 3 of antenna 1 

 equal to or slightly longer than article 1; gnathopods subchelate; 

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

 Indonesia, littoral. 



Cheiriphotis Walker 



Cheiriphotis Walker, 1904. 



Type-species: Melita megacheles Giles, 1885 (monotypy). See J. L. 

 Barnard, 1962a. 



Accessory flagellum 3- or more articulate; article 3 of antenna 1 

 shorter than article 1; gnathopods subchelate; uropod 3 scale-like, 

 peduncle plate-like (Cheirimedeia) , outer ramus equal to or shorter 

 than peduncle, inner ramus half as long as outer or absent; coxae 

 1-4 of varying sizes and shapes (Microprotopus) . Species: 2, tropical 

 Indo-Pacific, littoral. 



Chevalia Walker 



Chevalia Walker, 1904. 

 Neophotis Stout, 1913. 



Type-species: C. aviculae Walker, 1904 (monotypy). See J. L. 

 Barnard, 1962a. 



Accessory flagellum 2-articulate; article 3 of antenna 1 slightly 

 shorter than article 1; gnathopods subchelate, gnathopod 1 poorly; 

 uropod 3 short, biramous, rami subequal to each other, equal to pe- 

 duncle in length; pleonites 4- <^nd 5 coalesced. Species: 1, tropical 

 Indo-Pacific, littoral. 



Gammaropsis Liljeborg, new synonymy 



{Gammaropsis) Liljeborg, 1855 [subgenus]. 



Eurystheus Bate, 1857a. — Stebbing, 1906. 



Paranaenia Chilton, 1884. 



Maeroides Walker, 1898. 



Audulla Chevreux, 1901a [a valid subgenus]. 



Fimhriella Stout, 1913. 



Pseudeurystheus Schellenberg, 1931 [a valid subgenus]. 



Type-species: Gammarus maculatus Johnston, 1827 (selected by 

 Boeck, 1876, with subsequent synonymy). See Sars, 1895. 



Accessory flagellum 3- or more articulate; article 3 of antenna 1 

 equal to or longer than article 1; gnathopods subchelate; uropod 3 



