MARESTE GAMMARIDEAN AMPHIPODA 229 



Accessory flagellum absent; lower lip with inner lobes; inner 

 plate of maxilla 1 densely lined with setae on medial edge; gnathopods 

 not eusirid, subchelate, article 5 not lobate, slightly shorter than 

 article 6; pereopods 3-5 with articles 4-6 each not longer than 

 article 2; antenna 1 longer than antenna 2, coxa 4 scarcely excavate 

 posteriorly {combining character). Species: 2, antarctic, littoral (to 

 400 m). 



Pseudomoera Schellenberg 



Pseudomoera Schellenberg, 1929a. 



Type-species: Atyloides gabrieli Sayce, 1901 (monotypy). 



Accessory flagellum articulate, of medium length; lower lip with 

 inner lobes ; inner plate of maxilla 1 with four or fewer terminal setae ; 

 gnathopods not eusirid, subchelate, article 5 lobate, equal to article 

 6 in length, 5 slightly broader than 6 (Accedomoera) ; pereopods 3-5 

 with articles 4-6 each not longer than article 2; body smooth (Cleo- 

 nardopsis). Species: 1, Australia, freshwater. 



Pseudopontogeneia Oldevig 



Pseudopontogeneia Oldevig, 1959. 



Type-species: P. intermedia Oldevig, 1959 (monotypy). 



[Accessory flagellum and lower lip not described]; inner plate of 

 maxilla 1 with four or fewer terminal setae; gnathopods [not distinctly 

 described]; article 6 longer than 5; pereopods 3-5 with articles 4-6 

 each not longer than article 2. Species: 1, Bering Island, littoral. 



Rhachotropis Smith 



Tritropis Boeck, 1871 (homonym, Reptilia). 



Rhachotropis Smith, 1883 (new name). — Stebbing, 1906. — Shoemaker, 1930. 



Gracilipes Holmes, 1908. 



Type-species: Oniscus aculeatus Lepechin, 1780 (monotypy). See 

 Sars, 1895. 



Accessory flagellum 2-articulate, short; lower lip with small inner 

 lobes; inner plate of maxilla 1 with four or fewer terminal setae; 

 gnathopods not eusirid, subchelate, article 5 lobate, shorter than 

 article 6; pereopods 3-5 with articles 4-6 each longer than article 2; 

 body carinate or toothed (Cleonardo). Species: 30, bipolar, tropical 

 submergents, primarily bathyal-abyssal. 



Ronco J. L. Barnard 



Ronco J. L. Barnard, 1965. 



Type-species: R. sosa J. L. Barnard, 1965 (original designation). 



