The Amphipoda of Bermuda. 87 



rectangular, as broad as wrist and about 1^/2 times as long, slightly 

 broader distally than proximally, palm irregularly incised, slightly 

 oblique with numerous setae and large prehensile spine, posterior 

 margin with several fascicles of setae ; linger of usual form with 

 concave margin serrate, somewhat longer than palm. 



Second gnathopods with rather small subrectangular epimeron 

 which is longer than high and with rounded angles ; second joint 

 moderate ; third joint short ; fourth oblong with wrist articulating 

 by whole anterior margin, provided with setae on distal portion of 

 posterior margin and apex ; wrist triangular, twice as long as wide 

 and as wide as hand, with many setae on posterior margin ; hand 

 subrectangular, about as long as wrist with palm nearly transverse 

 and provided with numerous submarginal setae and a prehensile spine, 

 posterior margin with numerous setae ; finger of usual form, fairly 

 stout, serrated on concave margin. 



Epimera rather low ; gills oval and broad. In the single specimen 

 at hand all the pereiopods were missing. 



Uro])ods, 3 pairs, biramous ; rami styliform ; first and second pro- 

 jecting slightly beyond terminal j^air ; all provided apicall}' with 

 groups of several stout spines. 



Telson thick, entire, about as broad as long, with 2 setae at 

 each distal angle. 



Dorsally and laterally the 5 anterior thoracic segments and the 

 head are marked with irregular masses of pigment in the form of 

 a fine network which, in the alcoholic specimen, is brownish black. 



Length 2.5 mm. 



The single specimen in the collection was found in Baile}' Bay 

 in coralline at low water in 1898. 



Amphithoe longimana Smith, 1874. 



1874. Smith, Rep. U. S. Fish. Com., vol. 1, p. 563. 



Eyes small, compound, somewhat oval, made up of many ocelli 

 crowded together. 



First antennae longer than second, and nearly as long as body, 

 with no accessory flagellum ; first joint of peduncle stout, cyHndrical, 

 about 5 times as long as broad, provided with a few setae ; second 

 joint somewhat longer than first and more slender ; third joint about 

 ^/'2 as long as first and much thinner, bearing a few setae on distal 

 end; flagellum slender, composed of about 32 segments each with 

 short setae on apical margin. Second antennae long and slender; 

 gland cone small and slender ; third joint of peduncle nearly twice 

 as long as wide and with a few setae at apex ; fourth and fifth joints 



