MARINE GAMMARIDEAN AMPHIPODA 371 



Genera of Melphidippidae 



Melphidippa Boeck 



Melphidippa Boeck, 1871. — Stebbing, 1906. 



Type-species: Melphidippa goesi Stebbing, 1899a (=new name 

 for homonym, Gammarus spinosus Goes, 1866) (type indicated by 

 Boeck, 1876, considered as type by Sars, 1895, but selected by Gurja- 

 nova, 1951). See Sars, 1895. 



Accessory flagellum long, 2- or more articulate; mandibular palp 

 article 3 tmce as long as article 1 ; maxillipedal palp article 4 claw- 

 shaped; gnathopod 2 with linear fifth and sixth articles; telson cleft. 

 Species: 7, bipolar, littoral to bathyal (750 m). 



Melphidippella Sars 



Melphidippella Sars, 1895. — Stebbing, 1906. 



Type-species: Atylus macer Norman, 1869a (original designation). 



Accessory flagellum short, 1-articulate; mandibular palp article 

 3 equal to article 1 ; maxillipedal palp article 4 claw-shaped; gnathopod 

 2 with linear fifth and sixth articles; telson cleft. Species: 2, boreal 

 N. E. Atlantic, Japan, littoral. 



Melphisana J. L. Barnard 



Melphisana J. L. Barnard, 1962b. 



Type-species: M. bola J. L. Barnard, 1962b (original designation). 



Accessory flagellum short, 1-articulate; mandibular palp article 3 

 equal to article 1; maxillipedal palp article 4 short, stout, not claw- 

 shaped; gnathopod 2 with articles 5 and 6 intermediate between linear 

 and oval; [uropod 3 unknown]; telson entire, emarginate. Species: 2, 

 California, Japan, littoral. 



Ochlesidae 



Figure 134 



Diagnosis. — Accessory flagellum absent; palp of maxilliped absent; 

 mouthpart group projecting subconically; mandible lacking molar, 

 coxae 1-4 subacuminate; telson entire. Monogeneric. See Lysi- 

 anassidae, Acanthonotozomatidae. 



Description. — Body massive, processiferous ; accessory flagellum 

 absent; flagella of antennae reduced to a few articles; rostrum large; 

 coxae 1-4 subacuminate; mouthparts projecting in a subcorneal 



