The Amphipoda of Bermuda. 103 



uropods, apically rounded with broad, shallow depression dividing 

 it into 2 lobes which are armed on the dorsal surface with numerous 

 recurved spines. 



There were only 2 or 3 specimens of the species in the collection, 

 about 4 mm. in length. The species has been previously reported 

 from the Atlantic coast of N. America (Vineyard Sound), Norway, 

 the Adriatic, Rio Janeiro, and the North Pacific (San Francisco). 



Chelura terebrans Philippi, 1839. 



1839. Philippi, Arch, f Naturgesch., vol. 5, p. 120, pi. 3, fig. 3. 



Eyes round, compound, situated close to lateral lobes of head. 



First antennae about Vs as long as body, with joints of peduncle 

 successively diminishing in size ; principal flagellum about as long 

 as last 2 joints of peduncle, composed of 6 joints rather densely 

 provided with slender setae ; accessory flagellum short, made up 

 of 2 joints. Second antennae much longer and stronger than first 

 and somewhat curved ; third, fourth, and fifth joints of peduncle 

 nearly equal in length, fifth being longer than either fourth or third ; 

 flagellum not segmented, consisting of a large spatulate joint pro- 

 vided with dense setae on both edges and tipped with one or two 

 rudimentary segments. 



Upper lip rather elongated with apex broad and entire. Mandibles 

 with strong body but relatively small palp ; principal and secondary 

 cutting edges denticulated, molar tubercle strongly developed ; palp 

 3-jointed with terminal joint longest and having acute apex armed 

 with several long setae and inner margin beset with short setae, 

 second joint cylindrical, about twice as long as wide; first joint 

 very short. Lower lip made up of 2 pairs of plates with cilia on 

 anterior margin of outer plates. First maxillae with inner plate 

 moderately developed, provided with several setae on apex ; outer 

 plate strong, provided with many strong, branching spines ; palp 

 moderate, composed of 2 joints of which the distal one is the longer 

 with rounded apex which is provided with setae of various lengths. 

 .Second maxillae with plates rather narrow and provided apically 

 with setae. Maxillipeds with well developed plates and 4-jointed 

 palp ; inner plate with rounded apex and extending nearly as far 

 as distal end of first joint of ]5alp, with slender setae on inner and 

 apical margin ; outer plate with outer margin rather strongly convex, 

 inner margin straight and apex fairly acute, both provided with 

 setae; palp with second joint long and slender, slightly spindle- 

 shaped with setae on inner margin, third joint about twice as long 

 as broad, with outer apex produced to rounded lobe, fourth joint 



