384 U.S. NATIONAL MUSEUM BULLETIN 271 



Antenna 1 longer than antenna 2, article 3 as long as article 1 (Mono- 

 culodes); cutting edge of mandible projecting and sharp but poorly- 

 toothed, molar large, ridged; inner lobes of lower lip separate; 

 gnathopods dissimilar or similar, subchelate, article 5 with lobe 

 guarding article 6 on gnathopod 2, lobe not guarding as closely on 

 gnathopod 1; uropod 2 reaching end of uropod 3. Species: 2, 

 bisubpolar, Httoral. 



Oedicerina Stephensen 



Oedicerina Stephensen, 1931. 



Type-species: 0. ingolfi Stephensen, 1931 (monotypy). See Gur- 

 janova, 1951. 



Cutting edge of mandible slightly projecting, toothed, molar large, 

 ridged; inner lobes of lower lip separate; [gnathopods unknown]; coxa 

 4- with a large hlunt posterior lohe. Type specimen badly damaged. 

 Species: 1, N. Atlantic (1,802 m). 



Oediceroides Stebbing 



Oediceroides Stebbing, 1888; 1906. 



Oediceropsoides Shoemaker, 1925. 



(Lopiceros) J. L. Barnard, 1961 [a valid subgenus]. 



Type-species: Oediceropsis rostrata Stebbing, 1883 (selected by 

 Pirlot, 1932). 



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

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

 stout, subchelate, posterior lobes of article 5 well developed, pro- 

 jecting at right angles or nearly so, or not guarding article 6 {Monocu- 

 lodes), lobes becoming obsolescent; uropod 2 reaching end of uropod 

 3; inner plate of maxilla 1 with three or more setae (Paroediceroides) ; 

 antenna 2 usually enlarged and elongate (Monoculodes) . Species: 24, 

 cosmopoUtan cold-water, httoral to abyssal. Oediceroides cystijera 

 and 0. brevirostris Schellenberg (1931) probably incorrectly assigned 

 here. 



Oediceropsis Liljeborg 



Oediceropsis Liljeborg, 1865. — Stebbing, 1906. 



Type-species: 0. brevicornis Liljeborg, 1865 (monotypy). See Sars, 

 1895. 



Eyes lateral; cutting edge of mandible projecting, toothed, molar 

 large, ridged; inner lobes of lower lip separate; gnathopods similar 

 to each other, subchelate, stout, lobe of article 5 projecting at right 

 angles; uropod 2 reaching end of uropod 3. Article 1 of antenna 2 

 swollen in type-species. Bridged through 0. proxima Chevreux (1908c) 

 to Parodiceroides. Species: 2, boreal N. Atlantic, bathyal. 



