MARINE GAMMARIDEAN AMPHIPODA 245 



Melita Leach, new synonymy 



Melita Leach, 1814a. — Stebbing, 1906. — Shoemaker, 1941b. 



Boscia Leach, 1814a (nomen nudum). 



Megamoera Bate, 1862 (type by present selection, Gammarus dentatus Kr0yer, 



1842). 

 Caliniphargus Stout, 1913. 

 Dulichiella Stout, 1913. 



Type-species: Cancer palmatus Montagu, 1804 (monotypy). See 

 Sars, 1895. 



Accessory flagellum 2- or more articulate; lower lip with slight 

 inner lobes; inner plate of maxilla 1 with largely terminal setae, of 

 maxilla 2 densely setose medially; gnathopods normal; uropod 3 

 greatly exceeding uropod 1, outer ramus very long, 1-articulate, inner 

 short and scale-like; telson deeply cleft; metasome often toothed, 

 urosome often toothed and bearing scattered dorsal spines. Species: 

 45, cosmopolitan, littoral to abyssal. 



Melitoides Gurjanova 



Melitoides Gurjanova, 1934. 



Type-species: M. makarovi Gurjanova, 1934 (monotypy). See 

 Gurjanova, 1951. 



Accessory flagellum 4-articulate ; lower lip with inner lobes; inner 

 plates of maxillae densely setose medially; gnathopods normal; 

 uropod 3 not exceeding uropod 1, outer ramus long, 1-articulate, 

 inner ramus short, scale-like; telson deeply cleft; urosome dorsally 

 toothed. Species: 1, subarctic, littoral. 



Mesogamniarus Tzvetkova 



Mesogammarus Tzvetkova, 1965. 



Type-species: M. melitoides Tzvetkova, 1965 (original desig- 

 nation) . 



Accessory flagellum more than 3-articulate ; lower lip with scarce 

 indication of inner lobes; inner plates of maxillae 1-2 lined medially 

 with setae; gnathopod 1 slightly larger than 2; uropod 3 apparently 

 exceeding uropod 1, rami long, lanceolate, subequal in length, outer 

 ramus with short article 2; telson short, broad, cleft halfway, lobes 

 gaping [possibly interpreted as deeply emarginate]; pleonites 1-3 

 with posterodorsal margins cut into several medium-sized teeth; 

 urosome armed dorsally with rows of spines. Species: 1, Japan Sea, 

 near Vladivostok, littoral. 



Metaceradocoides Birstein and Vinogradova 



Metaceradocoides Birstein and Vinogradova, 1960. 



