144 U.S. NATIONAL MUSEUM BULLETIN 271 



Antenna 1 lacking accessory flagelliim ; mandible with palp ; gnatho- 

 pods large, subchelate, gnathopod 2 equal to or larger than 1 ; article 6 

 of pereopods 3-5 scarcely widened apically, rarely prehensile {Pleo- 

 nexes); outer ramus of uropod 3 with two hooks; apical cornified 

 processes of telson, if present, obsolescent (Pleonexes). Species: 35, 

 cosmopolitan, littoral. 



Cymadusa Savigny 



Cymadusa Savigny, 1816. 

 Gruhia Czerniavski, 1868. 

 Acanthogrubia Stout, 1912. 



Type-species: C. jilosa Savigny, 1816 (monotypy). See Chevreux 

 and Fage, 1925 (as Gruhia hirsuta), Shoemaker, 1935 (as Gruhia 

 jilosa) . 



Antenna 1 with 1- or 2-articulate accessory flagellum; mandible 

 with palp; gnathopods large, subchelate, gnathopod 2 equal to or 

 larger than 1; article 6 of pereopods 3-5 not apically widened; outer 

 ramus of uropod 3 with two hooks. Species: ca. 10, generally tropical- 

 amphiboreal, littoral. 



Exampithoe K. H. Barnard 



Exampithoe K. H. Barnard, 1925. 



Type-species: E. natalensis K. H. Barnard, 1925 (monotypy). 



Antenna 1 lacking accessory flagellum; mandible with palp, molar 

 reduced; gnathopods large, subchelate, gnathopod 1 stouter than 2; 

 article 6 of pereopods 3-5 apically widened ; outer ramus of uropod 3 

 with two hooks. Species: 1, S. Africa, littoral. 



Macropisthopus K. H. Barnard 



Macropisthopus K. H. Barnard, 1916. 



Type-species: M. stebbingi K. H. Barnard, 1916 (monotypy). 



Antenna 1 lacking accessory flagellum; mandible with palp; gnatho- 

 pods feeble, chelate; article 6 of pereopods 3-5 scarcely widened 

 distally; outer ramus of uropod 3 with two hooks. Species: 1, S. 

 Africa, littoral. 



Varagruhia Chevreux 



Paragrubia Chevreux, 1901a. 



Type-species: P. vorax Chevreux, 1901a (monotypy). 



Antenna 1 with accessory flagellum ; mandible with palp ; gnathopods 

 large, subchelate, gnathopod 1 larger than 2; article 6 of pereopods 

 3-5 not apically widened; outer ramus of uropod 3 with two hooks. 

 Species: 1, tropical Pacific, littoral. 



