MARINE GAMMARIDEAN AMPHIPODA 345 



Glycerina Haswell 



Glycera Haswell, 1880b (homonym, Polychaeta). 

 Glycerina Haswell, 1882.— Stebbing, 1906. 



Type-species: Glycera tenuicornis Haswell, 1880b (monotypy). See 

 Pirlot, 1936. 



Upper lip acutely produced in front of epistome; mandibular molar 

 prominent, setulose, palp attached proximal to molar; gnathopod 1 

 simple, slender, article 5 slightly longer than 6; article 2 of pereopod 

 3 deeply indentured ; inner ramus of uropod 2 constricted; telson deeply 

 cleft. Species: 1, Coral Sea to E. Australia, littoral. 



Hippomedon Boeck 



Hippomedon Boeck, 1871. — Stebbing, 1906. — Gurjanova, 1962. 



Platamon Stebbing, 188rf. 



Paratryphosites Stebbing, 1899d. 



7 Paracentromedon Chevreux and Fage, 1925. 



?Elimedon J. L. Barnard, 1962d. 



Type-species: Anonyx holbolli Kr0yer, 1846 (selected by Boeck, 

 1876; note, the A. holbolli of Boeck, 1871 and 187Q= Hippomedon 

 denticulatus [Bate, 1857a] but the type-species should stand as A. 

 holbolli Kr0yer). See Sars, 1895. 



Head small, largely hidden by coxa 1 ("Tryphosa" auct.), vnth 

 distinct lateral lobes (Lepidepecreoides) ; upper lip either distinctly 

 or not lobate in front of epistome but both projections small, incon- 

 spicuous; mandibular molar large, ridged, palp attached level with 

 molar; gnathopod 1 subchelate or nearly simple, article 5 longer 

 than or equal to 6; telson short or medium, half or deeply cleft. 

 See also Paronesimus. Species: 41, cosmopolitan, cold water, littoral 

 to abyssal. 



Hirondellea Chevreux 



Hirondellea Chevreux, 1889.— Stebbing, 1906.— K. H. Barnard, 1930. 

 Tetr onychia Stephensen, 1923. 



Type-species: Hirondellea trioculata Chevreux, 1889 (original 

 designation). See Chevreux, 1900. 



When visible, eyes triple; head globular or with large lateral lobes 

 rounded, palp article J^ oj maxilliped claw-shaped (Centromedon) ; 

 mandibular molar conical, setulose, palp attached at proximal end of 

 molar; inner plate of maxilla 1 with at least one enlarged sickle-seta 

 or seta mth strong attenuation or constriction, palp article 2 often 

 notched medially; maxillipedal palp article 2 half or less as broad as 

 outer plate (Ambasiella) ; gnathopod 1 subchelate or slightly chelate, 

 articles 5 and 6 equal; coxa 1 rather small, often partially hidden by 



