190 U.S. NATIONAL MUSEUM BULLETEST 271 



Chevreuxius Bonnier 



Chevreuxius Bonnier, 1896. — Stebbing, 1906. 



Type-species: C. grandimanus Bonnier, 1896 (monotypy). 

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

 shorter than article 1, flagellum slightly longer than article 3; antenna 



2 slender, equal to antenna 1, flagellum shorter than article 5; mandib- 

 ular palp 3-articulate ; coxae short, not touching serially; male 

 gnathopod 1 much larger than gnathopod 2, carpochelate, article 

 6 stout and subchelate but narrower than article 5; gnathopod 2 sub- 

 chelate; uropod 2 with one ramus; uropod 3 with its single ramus 

 as long as peduncle. Species: 1, N. Atlant'c, bathyal (950 m). 



Concholestes Giles 



Concholestes Giles, 1888.— Stebbing, 1906. 



Type-species: C. dentalii Giles, 1888 (monotypy). 



Accessory flagellum absent; article 3 of antenna 1 subequal to article 

 1 , flagellum equal to article 3 ; antenna 2 of medium stoutness, longer 

 than antenna 1, flagellum much shorter than article 5; [mandible not 

 described]; coxae not touching serially; gnathopod 2 normally sub- 

 chelate, gnathopod 1 nearly simple ; uropod 2 with ?one ramus ; uropod 



3 lacking rami. Species: 1, Bay of Bengal, littoral, in shell of 

 Dentalium. See Uncinotarsus in Aoridae. 



Corophium Latreille 



Corophium Latreille, 1806.— Stebbing, 1906. 

 Audouinia Costa, 1851b {nom. nud.). 



Type-species: Oniscus volutator Pallas, 1776 (monot37-py and sub- 

 sequent synonymy). See Sars, 1895 (as C. grossipes). 



Accessory flagellum absent; article 3 of antenna 1 shorter than 

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

 than antenna 1, stout, especially in male flagellum much shorter than 

 article 5, male article 4 usually with a distal tooth; mandibular palp 

 2-articulate; coxae short, not touching serially; gnathopods small, 

 gnathopod 1 subchelate, gnathopod 2 simple, extremely setose, articles 



4 and 5 elongate and anteroposteriorly apposed; uropod 2 biramous; 

 uropod 3 flattened, its single ramus equal to peduncle; urosomites 

 coalesced or free. Species : 47, cosmopolitan, open-sea littoral, brackish, 

 fresh-water and Caspian Sea. 



Dryopoides Stebbing 



Dryopoides Stebbing, 1888.— Stebbing, 1906. 



Type-species: D. westwoodi Stebbing, 1888 (monotypy). See 

 Stebbing, 1910. 



