144 U.S. NATIONAL MUSEUM BULLETIN 2 60 



ever, supported by the presence of the remains of sabellid and non- 

 pelagic polynoid polychaetes in its alimentary tract (see examples of 

 aviciilar hooks and setae illustrated in fig. G9) ; sabellids are confined 

 to the benthos. Tlie subchelate pereopod 2 may be utilized in the cap- 

 ture of prey. As far as I am able to ascertain this is the first record 

 of a predaceous benthic gammaridean. 



Material. — Baja Slope Expedition station P 285-61 (two speci- 

 mens 28 mm and 21 mm long) . 



In figure 70o the left side of the drawing shows the lower lip un- 

 flattened, the right side flattened. 



Phippsiella Schellenberg 



Phippsiella pajarella, new species 



Figure 71 



Description. — Unique specimen veiy small and at time of death 

 about to undergo ecdysis; rostrum obsolete, lateral cephalic margin 

 nearly straight ; eyes absent ; mouthparts generally as in Stegocephalus 

 inflatus Kr0yer (see Sars, 1895, pi. 69) but palp of maxilla 1 biarticu- 

 late, outer plate of maxilla 2 not as strongly geniculate, setae not as 

 strongly hooked, outer plate of maxilliped with more complex arma- 

 ment (see figure), outer plate of maxilliped extending to middle of 

 palp article 3, article 4 of palp about 60 percent as long as article 3 ; 

 coxa 4 of medium expansion between those coxae of P. slmilis (Sars, 

 1895) and P. viscaina, new species, coxa 5 subacute posterovent rally ; 

 gnathopods reconstructed in figures from badly shriveled condition, 

 slender ; all pereopods with one margin of article 6 bearing notch and 

 two spines, otherwise margins of sixth articles smooth except for 

 minute distal coupling spine ; posterior lobe of article 2 of pereopod 5 

 very broad and deeply rounded ventrally, more so than in other species 

 of genus; pleonal epimera in poor condition, believed to be similar to 

 those of P. minima Stephensen (1925) but epimeron 3 with small pos- 

 teroventral tooth ; outer rami of uropods 1 and 2 with one marginal 

 spine each, outer ramus of uropod 3 uniarticulate; telson presumably 

 cleft halfway, tissue occurring only in distal half and basal margms 

 perhaps extended because of ecdysial conditions. 



HoLOTYPE. — AHF No. 6035, juvenile, 2.1 mm. Unique. 



Type-locality.— Station 7229, 27°54'25" N, 115°40'00" W, 1720 m, 

 Dec. 31, 1960. 



Relationship. — This species has closest affinities with Phippsiella 

 minima Stephensen (1925) because of the deeply rounded posteroven- 

 tral lobe of article 2 on pereopod 5 but the specimen at hand has a 

 much broader and longer lobe than does P. minima. The gnathopods 



