MARINE GAMMARIDEAN AMPHIPODA 469 



Austrochiltonia Hurley 



Austrochiltonia Hurley, 1958. 



Type-species: HyaleUa australis Sayce, 1901 (original designation). 



Maxilla 1 lacking palp; article 4 of maxillipedal palp short, conical; 

 gnathopods subchelate in both sexes, male gnathopod 2 much larger 

 than 1, article 5 not projecting between 4 and 6, female gnathopod 

 2 like 1; male pleopod 1 normal (Chiltonia); uropod 3 lacking inner 

 ramus; telson entire. Species: 2, Australia, freshwater. 



Chiltonia Stebbing 



Chiltonia Stebbing, 1899a.— Stebbing, 1906. 



Type-species: HyaleUa mihiwaka Chilton, 1898 (original desig- 

 nation). See Hurley, 1954a. 



Maxilla 1 lacking palp; article 4 of maxillipedal palp short, conical; 

 gnathopods subchelate in both sexes, male gnathopod 2 much larger 

 than 1, article 5 not projecting between articles 4 and 6, female 

 gnathopod 2 like 1 ; male pleopod 1 with inner ramus attenuated to a 

 backturned whip-like lash (Afrochiltonia and Austrochiltonia) ; uropod 3 

 lacking ramus; telson entire. Species: 3, New Zealand, freshwater. 



Hyale Rathke 



Hyale Rathke, 1837.— Stebbing, 1906. 



Nicea Nicolet, 1849. 



(Allorchestina) Brandt, 1851a (valid subgenus). Type by present selection: 



Amphithoe [sic] prevostii Milne Edwards, 1830. 

 Galanthis Bate, 1857a. 



Type-species: H. pontica Rathke, 1837 (monotypy). See Sars, 

 1895 (as H. luhhockiana) . 



Maxilla 1 with 1-articulate palp (but note Sars, 1895, pi. 11); 

 article 4 of maxillipedal palp unguiform; gnathopods subchelate in 

 both sexes, male gnathopod 2 larger than 1, article 5 not projecting 

 between articles 4 and 6, female gnathopod 2 like gnathopod 1 ; 

 uropod 3 lacking inner ramus; telson cleft. Species: 48, cosmopolitan, 

 especially tropics, littoral. 



HyaleUa Smith 



HyaleUa Smith, 1874.— Stebbing, 1906. 



Type-species: Amphitoe aztecus Saussure, 1858 (monotypy and 

 subsequent synonymy). See Bulycheva, 1957. 



Maxilla 1 with short 1-articulate palp; article 4 of maxillipedal 

 palp unguiform; gnathopods of both sexes subchelate, male gnathopod 

 2 larger than 1, article 5 produced between articles 4 and 6; female 



