The Amphipoda of Bermuda. 



47 



Mandibles with all parts well developed, palp 3-jointed, the ter- 

 minal joint of which is bluntly styliform, shorter than second and 

 provided with long setae on inner margin. First maxillae with 2- 

 jointed palp of uniform thickness throughout and with apex rounded 

 and provided with short setae ; outer plate of usual form with forked 

 and branching toothlike spines on oblique distal margin ; inner plate 



Pig. 17. Maura rathbunae Pearse. 



triangular, of moderate size, with 4 setae on apex. Second maxillae 

 with subequal, oval plates having setae on distal margins. Maxillipeds 

 with 4-jointed palp and well developed plates ; inner plate subrectan- 

 gular, extending somewhat beyond lirst joint of palp with outer 

 margin slightly convex and with distal margin armed with plumose 

 .spines ; outer plate rather large, armed with setae on inner and 

 distal margins, oval, extending nearly as far as second joint of palp 

 which is the longest und cylindrical ; third joint about ^/a as long 



