The Ampliipoda of Bermuda. 1 1 



Mandibles with slender 3-jointed palp, the third joint of which is 

 longer than second, cutting edge expanded and divided into 7 teeth ; 

 molar tubercle small, with no true triturating surface. First maxillae 

 with inner plate small and Ijroad and bearing a single spine on apex ; 

 outer plate narrow, moderately long, sides parallel to near distal 

 end where plate tapers, inner margin of apex armed with about 

 12 broad, curved spines: palp 2-jointed, first joint as broad as long, 

 second joint twice as long as broad, rounded at apex which is 

 armed with a tooth and several spines. Second maxillae with inner 

 plate narrow at base and inner edge olDlique and slightly convex ; 

 outer plate narrow, somewhat longer than inner plate, bearing 3 

 or 4 spines on narrow apex and fine setules on inner margin. 

 Maxillipeds with inner plate long and narrow, having lateral mar- 

 gins parallel and with rounded apex provided with 2 toothlike spines, 

 extending as far as apex of first joint of palp ; outer plate rather 

 large, extending to middle of second joint of palp, oval in form, 

 twice as long as wide, outer margin strongly convex, the distal portion 

 of which bears many fine setae, inner margin distally serrate, proxi- 

 mally bearing several submarginal spines, apex bearing large tooth 

 and spine; palp 4-jointed, first joint longer than broad, with a few 

 spines on outer distal corner and outer margin ; second joint rather 

 narrower than first, slightly longer than broad, with a few spines 

 on distal margin ; third joint about twice as long as wide and not 

 more than half as wide as second joint, provided with spines on 

 apex ; fourth joint clawlike, about ^/s as long as third joint. 



First gnathopods with oval epimeron, which is higher than long ; 

 second joint long, more than 3 times as long as broad with a few 

 setae on anterior margin and apex ; third joint not as long as broad 

 armed with a few spines apically ; fovirth joint more slender than 

 third, rounded apically, twice as long as broad, with fascicle of 

 spines at apex ; wrist triangular, broader than long, articulating with 

 anterior margin of fourth joint, posterior margin prolonged distall}' 

 to form a triangular process which extends to the middle of the 

 hand parallel to its posterior margin ; hand subtriangular, articulat- 

 ing with wrist by apex, anterior margin slightly convex, palm also 

 slightl}' convex and passing into posterior margin by obtuse angle, 

 marked by 2 prehensile spines, finely serrate and armed with sub- 

 marginal spines ; finger moderately strong, curved, slightly longer 

 than palm, inner margin with fine teeth. 



Second gnathopods with epimeron 1^/2 times as high as long, 

 ventral margin strongly convex ; second joint very long and slender, 

 more than 4 times as long as broad ; third and fourth joints as in 



