338 U.S. NATIONAL MUSEUM BULLETIN 271 



Clepidecrella J. L. Barnard 



Clepidecrella J. L. Barnard, 1962d. 



Type-species: C. cahinda J. L. Barnard, 1962d (original designa- 

 tion). 



Head small, partially hidden by coxa 1; article 1 of antenna 1 

 carinate; upper lip and epistome not differentially produced; mandib- 

 ular molar vestigial, palp very long, attached level with molar; 

 outer plates of maxilliped rather small, palp very long; gnathopod 1 

 simple, articles 5 and 6 equal; uropod 3 very short, inner ramus short, 

 scale-like; telson short, apically emarginate. Species: 1, S. Atlantic, 

 abyssal. 



Crybelocephalus Tattersall 



Crybelocephalus Tattersall, 1906. 



Type-species: C. megalurus Tattersall, 1906 (original designa- 

 tion). See Shoemaker, 1945a. 



Accessory flagellum absent; head somewhat deformed; mandible 

 lacking both molar and palp; gnathopod 1 simple, articles 5 and 6 

 subequal; gnathopod 2 simple; coxae 1 and 2 small and fully hidden 

 by coxa 3; pereopods 1 and 2 subprehensile; telson large, entire. Spe- 

 cies: 3, cosmopolitan, bathy-abyssopelagic. 



Crybelocyphocaris Shoemaker 



Crybelocyphocaris Shoemaker, 1945a. 



Type-species: C. tatter salli Shoemaker, 1945a (original designa- 

 tion). 



Accessory flagellum absent; head deformed; mandible lacking molar, 

 palp attached rather proximally; gnathopod 1 simple, articles 5 and 

 6 equal; gnathopod 2 simple; coxae 1 and 2 small and partially hidden 

 by coxa 3; pereopods 1 and 2 prehensile, pereopod 3 subprehensile; 

 uropod 3 small, outer ramus equal to peduncle, 2-articulate, inner 

 ramus one third as long as outer; urosomites 2 and 3 coalesced. Spe- 

 cies: 1, Atlantic, bathypelagic. 



Cyclocaris Stebbing 



Cyclocaris Stebbing, 1888; 1906. 



Type-species: C. tahitensis Stebbing, 1888 (monotypy). 



Apparently upper lip lobately produced in front of epistome; head 

 somewhat deformed and globular; mandible flattened, possibly with 

 elongate, lanceolate, setulose molar or none, palp attached medially 



