MARLNiE GAMMARIDE,AN AMPHIPODA 179 



[Antennae unknown ; accessory flagellum unknown] ; lower lip with 

 slight inner lobes; gnathopodal palms indistinct, articles 5 and 6 

 equal, together not elongate, article 5 lacking posterior lobe; telson 

 short, broad, slightly emarginate. Species: 2, one pelagic at New 

 Zealand and one at 304 m in Indonesia. 



Sancho Stebbing 



Sancho Stebbing, 1897; 1906. 



Type-species: S. platynotus Stebbing, 1897 (monotypy). 



Body and head extremely depressed; antennae subequal, peduncle of 

 antenna 1 very short; accessory flagellum as long as article 1 of primary 

 flagellum; lower lip without inner lobes; gnathopods not elongate, 

 male gnathopod 1 with transverse palm, article 5 longer than article 6, 

 gnathopod 2 much larger, Eusirus-like; female gnathopod 2 like male 

 gnathopod 1; pereopods spinose as in Haustoriidae; telson tapering 

 but apically truncate. Species: 1, E. Australia, littoral. 



Stenopleura Stebbing 



Stenopleura Stebbing, 1888; 1906. 



Type-species: S. atlantica Stebbing, 1888 (monotypy). See 

 Stephensen, 1915; Birstein and Vinogradov, 1958; J. L. Barnard, 

 1962d. 



Antenna 1 slightly longer than or equal to antenna 2; accessory 

 flagellum absent; lower lip with inner lobes; gnathopods moderately 

 stout, palms indistinct, article 5 much shorter than 6 and with distinct 

 posterior lobe, articles 5 and 6 together not elongate, article 7 as long as 

 article 6, latter not bent (Harpinioides) ; telson apically toothed. 

 Species: 1, probably cosmopolitan epipelagic in tropics. Compare 

 diagnosis of Stenopleuroides. 



Stenopleuroides Birstein and Vinogradov 



Stenopleuroides Birstein and Vinogradov, 1964. 



Type-species: S. macrops Birstein and Vinogradov, 1964 (mono- 

 typy)- 



Antenna 1 much longer than antenna 2; accessory flagellum absent; 

 [lower lip unknown]; gnathopods moderately stout, palms indistinct, 

 article 5 much shorter than 6 and with distinct posterior lobe, articles 

 5-6 together not elongate, article 7 nearly as long as article 6, latter 

 not bent (Harpinioides); telson entire, unornamented; body dorsally 

 cuspidate (pereonite 7 and pleonites 1-4); pereopod 5 very elongate, 

 article 5 as long as articles 2, 3, 4, and 6 together (Stenopleura). Species: 

 1, Indian Ocean, probably epipelagic. 



