Rev. T. R. R. Stebbing's Revision of Amphipoda. 209 



expanded second joint of tlie palp. First and seconl gnatho- 

 pods with fifth joint subequal to sixth, the palm nearly trans- 

 verse. First to fourth peraopods with membranous cap over 

 tip of the narrowly boat-shaped finger. Third uropods with 

 rami subequal to the peduncle. Telson rather longer than 

 broad. 



The generic name is in recollection of the late Charles 

 Spence Bate. 



The type species is Halimedon Schneiden\ Stebbing. 



Fam. Pleustidae. 

 Mesopleustes, gen. nov. 



Body carinatCj integument indurated. Rostrum large. 

 First to fourth side-plates distally narrowed. Upper lip with 

 small oblique incision. Mandibles with molar prominent, 

 strong, oval. First maxilla3 with four set^e on the inner 

 plate. Maxillipeds with outer plates scarcely reaching beyond 

 the first joint of the palp, the finger strong. The gnathopods 

 subchelate, strong, second pair the larger. Per^eopods robust, 

 subequal. Telson subrotund. 



The type species is Pleustes ab/jssorum, Stebbing. 



Syaipleustes, gen. nov. 



Rostrum small. Upper lip witli oblique incision. Man- 

 dibles with molar strong, oval. First maxillai with two setaj 

 on the inner plate. Maxillipeds with finger slight. Second 

 gnathopods usually much stronger than the first and more 

 distinctly subchelate. 



To this genus I refer Amphithoe latipes, M. Sars, AmphU 

 thopsi's gldberj Boeck, Amphitkopsis pulchella, G. O. Sars, 

 Amphithopsis Olrikii, Hansen, and Amphithopsis grandi- 

 mana^ Chevreux. 



Fam. Calliopiidae. 



Paraleptamphopus, gen. nov. 



Body without dorsal dentation. First antennas the longer, 

 with small accessory fiagellum. Lower lip without inner 

 lobes. Mandibles with third joint of palp shoiter than the 

 second. First maxillte with many setai on the inner plate ; 

 second maxillae with setae fringing the inner margin of the 

 inner plate. Maxillipeds with outer plates not reaching the 

 apex of the palp's second joint. Gnathopods subchelate, 



