MARINE GAMMARIDEAN AMPHIPODA 385 



Oediceros Kr0yer 



Oediceros Kr0yer, 1842.— Stebbing, 1906. 



Type-species: 0. saginatus Kr0yer, 1842 (monotypy). See Sars, 

 1895. 



Cutting edge of mandible projecting and well toothed, molar lack- 

 ing ridges; inner lobes of lower lip separate; gnathopods similar to 

 each other, subchelate, lobes of article 5 well developed and project- 

 ing at right angles; uropod 2 reaching end of uropod 3. Species: 

 3, arctic-boreal N. Atlantic, littoral. 



Paraperioculodes K. H. Barnard 



Paraperioculodes K. H. Barnard, 1931; 1932. 



Type-species. P. brevimanus K. H. Barnard, 1931 (original des- 

 ignation); 1932. 



Eyes completely fused, forming a circle or oval (Gulbarentsia, Oedi- 

 ceroides) ; cutting edge of mandible apparently projecting, toothed, 

 molar ridged; inner lobes of lower lip separate; gnathopods similar 

 to each other, moderately stout, subchelate, posterior lobes of article 

 5 projecting somewhat distally; uropod 2 reaching end of uropod 3; 

 coxa 4 apparently only bluntly and poorly or not produced posteriorly 

 (Paroediceroides) . Species: 3, antarctic, httoral to bathyal (569 m). 



Parhalimedon Chevreux 



Parhalimedon Chevreux 1906a; 1906b. 



Type-species: P. turqueti Chevreux, 1906a (original designation) ; 

 1906b. 



Eyes paired; base of pereopod 5 sharply narrowed distally {Methali- 

 medon); cutting edge of mandible projecting, toothed, molar large, 

 ridged; inner lobes of lower lip separate; gnathopods similar to each 

 other, feeble, subchelate, elongate, fifth articles lacking posterior 

 lobes; uropod 2 reaching only to end of peduncle of uropod 3. Spe- 

 cies: 2, antarctic littoral and tropical bathyal (230 m). 



Paroediceroides Schellenberg 



Paroediceroides Schellenberg, 1931. 



Type-species: P. sinuata Schellenberg, 1931 (monotypy). 



Cutting edge of mandible projecting, toothed, molar large, ridged; 

 inner lobes of lower lip separate; gnathopods similar to each other, 

 stout, subchelate, posterior lobe of article 5 well developed, par- 

 tially guarding article 6 ; uropod 2 reaching end of uropod 3 ; inner 

 plate of maxilla 1 with one seta (Oediceroides) ; telson deeply emarginate 

 in type-species. Species: 2, subantarctic littoral and E. Pacific 

 bathyal. 



