192 U.S. NATIONAL MUSEUM BULLETIN 271 



Accessory flagellum absent; article 3 of antenna 1 much shorter 

 than article 1, flagellum longer than peduncle; antenna 2 slender, 

 slightly shorter than antenna 1, flagellum shorter than article 5 

 mandibular palp 3-articulate; coxae of medium size, touching serially 

 gnathopods normally subchelate, gnathopod 2 larger than 1 in male 

 smaller than 1 injemale; uropod 2 biramous; uropod 3 biramous, rami 

 shorter than peduncle. Female assigned to Aoridae. Species: 1, E. 

 Australia, littoral. 



Ericthonius Milne Edwards 



Ericthonius Milne Edwards, 1830.— Stebbing, 1906. 

 Pyctilus Dana, 1852b. 



Type-species: E. difformis Milne Edwards, 1830 (selected by 

 Stebbing, 1888, p. 142!). See Sars, 1895. 



Accessory flagellum absent; article 3 of antenna 1 longer than 

 article 1, flagellum subequal to peduncle; antenna 2 slender, equal to 

 antenna 1, flagellum as long as peduncle; mandibular palp 3-articulate; 

 coxae short, scarcely touching serially; male gnathopod 2 larger than 

 1, carpochelate, article 6 simple, female gnathopods normally sub- 

 chelate; uropod 2 biramous; uropod 3 with its single, medium length, 

 uncinate ramus shorter than peduncle. Species: 8, mainly N. 

 Hemisphere and tropics (one species), littoral (one extends to 1,134 m). 



Gaviota J. L. Barnard 



Gaviota J. L. Barnard, 1958b. 



Type-species: G. podophthalma J. L. Barnard, 1958b (original 

 designation) . 



Accessory flagellum absent; article 3 of antenna 1 equal to article 1, 

 flagellum longer than article 3; antenna 2 slender, equal to antenna 1, 

 flagelkmi longer than article 5; mandibular palp 3-articulate; coxae 

 long, touching serially; gnathopods normally subchelate; uropod 2 

 biramous; uropod 3 with its single ramus shorter than peduncle; head 

 with immense, pedunculate lateral ocular lobes. Species: 1, California, 

 littoral. 



Grandidierella Coutiere 



Grandidierella Coutiere, 1904. 



Type-species: G. mahafalensis Coutiere, 1904 (monotypy). See 

 Euffo, 1958. 



Accessory flagellum 1-articulate, usually elongate; article 3 of 

 antenna 1 shorter than article 1, flagellum nearly as long as peduncle; 

 antenna 2 slender (rarely stout in male), nearly equaling antenna 1, 

 flagellum often shorter than article 5; mandibular palp 3-articulate; 



