280 U.S. NATIONAL MUSEUM BULLETIN 271 



Type-species: Jassa pelagica Leach, 1814a (monotypy of Boeck 

 and subsequent synonymy). See Sars, 1895 (As Janassa capillata). 



Accessory flagellum a small tubercle; article 6 of gnathopod 1 

 longer than article 5; coxae 1 and 2 equal in length, coxa 5 longer 

 than coxa 6. Species: 4, Atlantic, E. Pacific, amphiboreal, littoral. 



Pseudischyrocerus Schellenberg 



Pseudischyrocerus Schellenberg, 1931. 



Type-species: P. denticauda Schellenberg, 1931 (present selection) . 



Accessory flagellum multiarticulate, elongate; article 5 of gnathopod 

 1 longer than article 6; coxae 1 and 2 equal in length; coxa 5 probably 

 longer than coxa 6; article 4 of pereopod 3 wider than on pereopods 

 4-5; outer plate oj maxilla 1 with nine spines (Bathyphotis) . Species : 

 1, antiboreal, littoral. 



Kuriidae 



[J. L. Barnard, 1964c] 

 Figure 109 



Diagnosis. — Accessory flagellum absent; body laterally compressed; 

 urosomites all coalesced, mandible lacking palp, molar well developed, 

 triturative; gnathopods feeble, subchelate; uropod 3 uniramous; telson 

 deeply cleft. Monogeneric. See Phliantidae, Talitroidea, Dogielinotidae, 

 Eophliantidae, Prophliantidae, Pagetinidae. 



Description. — Body laterally compressed, all urosomal segments 

 coalesced; mandible lacking palp, molar well developed; [lower lip 

 and maxillae unknown]; maxilliped vdih outer lobes strongly reduced; 

 gnathopods feeble, slender, subchelate; uropod 3 uniramous; telson 

 short, deeply cleft. 



Relationship. — The Talitroidea have discrete urosomal segments 

 and well-developed outer plates on the maxillipeds. 



The molar of the mandible is evanescent in the Prophliantidae 

 and Pagetinidae. 



Eophliantidae have cylindrical bodies. 



The Phliantidae have evanescent mandibular molars and well- 

 developed outer plates of the maxillipeds. Probably the Kuriidae 

 should eventually be assigned as a subfamily to Phliantidae to demon- 

 strate their close relationship. The Kuriidae show a link between 

 Phliantidae and Talitroidea. 



The Dexaminidae have only the last two urosomal segments co- 

 alesced and possess biramous third uropods but the Kuriidae other- 

 wise demonstrate a link between the Dexaminidae and the Talitroidea. 



