138 U.S. NATIONAL MTJSEIUM BULLETIN 271 



Cyclotelson Potts 



Cyclotelson Potts, 1915. 



Type-species: C. purpureum Potts, 1915 (monotypy). 



Mandibular molar absent; palp of maxilla 1 biarticulate; maxilla 2 

 degraded but with two distinct subequal lobes; outer plates of maxiJli- 

 peds not excavate, palp article 1 subequal to article 2; gnathopod 2 

 small, subch elate; telson entire; lateral angles oj urosomite 3 strongly 

 produced {combining character). Species: 1, Gulf of Mexico, littoral. 



Gitana Boeck 



Gitana Boeck, 1871.— Stebbing, 1906. 



Type-species: G. sarsi Boeck, 1871 (designated by Sars, 1895, 

 p. 229, "Remarks")- 



Mandibular molar large, triturative; palp of maxilla 1 uniarticulate ; 

 maxilla 2 normal, outer plate narrower than inner; outer plates of 

 maxillipeds slightly excavate, palp article 1 subequal to article 2; 

 gnathopod 2 small, nearly simple; telson entire. Species: 4, boreal, 

 littoral to bathyal (475 m) . 



Gitanogeiton Stebbing 



Gitanogeiton Stebbing, 1910. 



Type-species: 6^. sam Stebbing, 1910 (monotypy). 



Mandibular molar large, triturative; palp of maxilla 1 uniarticulate; 

 maxilla 2 normal, outer plate narrower than inner; outer plates of 

 maxUlipeds strongly excavate, palp article 1 much longer than other 

 articles; gnathopod 2 small, subchelate [telson damaged]. Species: 1, 

 off Manning R., Australia, littoral. 



Gitanopsis Sars 



Gitanopsis Sars, 1895. — Stebbing, 1906. 



Type-species: Amphilochus bispinosus Boeck, 1871 (original desig- 

 nation) . 



Mandibular molar large, triturative; palp of maxilla 1 biarticulate; 

 maxUla 2 normal, outer plate narrower than inner; outer plates of 

 maxilliped rarely excavate, palp article 1 subequal to article 2; 

 gnathopod 2 small, subchelate; telson entire. Species: 12, cosmo- 

 politan, littoral (2 species in bathyal to 1096 m). 



