GAJMMARIDEAN AMPHIPODA 11 



genus; antenna 1 slightly exceeding peduncle of antenna 2, article 

 2 about 2.5 times as long as article 1 and about 75 percent as long as 

 article 4 of antenna 2; antenna 2 much shorter than body length; 

 pereopods 3 and 4 having article 5 slightly produced posterodistally; 

 pereopod 2 not of elongated kind as in B. lepta (Giles) ; article 6 

 of pereopod 5 slightly longer than article 5, article 7 (including distal 

 seta) as long as article 6; inner ramus of uropod 3 \Yith two spines, 

 outer with one, apposing margins of rami not serrate, but micro- 

 scopically pectinate; telson cleft halfway. 



HoLOTYPE. — AHF No. 6122, ?young male, 4.8 mm. 



Type-locality.— Station 7234, 27°38'00" N, 115°16'16" W, 791- 

 842 m, Jan. 2, 1961. 



]Materl\l. — Two specimens from the type-locality. 



Eelationsiiip.— This species resembles ByhJis crasslcornis Metzger 

 (in Sars, 1895, pi. 66, fig. 1) but the first antennae of B. teres are 

 shorter and the outer ramus of uropod 3 lacks the single large serra- 

 tion. The most closely related species in the northeastern Pacific 

 Ocean is B. fannerensls J. L. Barnard (1966a) but it differs from 

 B. feres by the serrate rami of uropod 3 and the acute, not rounded 

 process of the gland-cone. 



Aoridae 



Lembos Bate 



Lembos edentulus, new species 



Figure 4 



Diagnosis. — Body very slender, coxae unusually small, posterior 

 coxae not touching each other; rostrum and lateral cephalic lobe 

 scarcely projecting, blunt ; eyes absent ; mandibular palp article 3 sub- 

 equal to article 2 in length, not falciform, bearing long terminal setae 

 and row of terminal and subterminal short setae ; inner plate of maxil- 

 la 1 vestigial, bearing one very long seta ; mouthparts, including upper 

 and lower lips, like those of Lembos loebsterl (Bate) (see Sars, 1895, 

 pi. 194), except for mandible and maxilla 1 figured herein; coxa 1 

 hemi-oval ; gnathopod 1 scarcely enlarged, poorly developed for male 

 Lembos^ palm well defined, slightly oblique, shorter than posterior 

 margin of article 6, dactyl exceeding palm in length; gnathopod 2 

 slender, palm very short, dactyl slightly exceeding palm; article 6 

 of pereopod 1 ( ? and 2) unusually slender; article 2 of pereopod 3 un- 

 expanded, article 5 having 3 large distal spines ; pereopods 2, 4, 5 miss- 

 ing from unique specimen ; pleonal epimera 1-3 rounded posteroven- 

 trally; uropods 1 and 2 each with long, acute distoventral process on 



242-332— G7 2 



