The Ampkipoda of Bermuda. 85 



moderately long, anterior margin straight and provided with numerous 

 ver}' long setae ; third joint very short ; fourth joint small, rectan- 

 gular, about twice as long as broad with group of setae at apex, 

 articulating with wrist by entire anterior margin ; wrist small and 

 cup-shaped, broader than long, with a fascicle of setae on very short 

 free portion of posterior margin ; hand large, much larger than that 

 of first, subrectangular, palm rather irregular, convex near articulation 

 of finger, bearing decided cavity with broad bottom in region of 

 prehensile spine, posterior margin prolonged to form triangular 

 process behind which the apex of the finger fits, posterior and an- 

 terior margins provided with fascicles of setae, palm provided with 

 a few setae of various lengths ; finger rather stout, of usual form. 



In female, gnathopods smaller than in male ; first gnathopods 

 with relatively longer and more slender finger; second gnathopods 

 with palm regularly convex and lacking prolongation of posterior 

 margin of hand to form triangular process. 



Pereiopods of usual form, provided with pointed dactyls, first 

 2 pairs with spinning glands. 



Uropods, 3 pairs, biramous ; second pair projecting beyond first 

 and third ; terminal uropods having rami nearly as long as ped- 

 uncle and provided with several stout spines apically. 



Telson thick, short, entire. 



The species was "represented in the collection by a male and a 

 female 2.5 mm. in length, collected by W. G. VanName, 1901. It 

 has been recorded from the Arctic Ocean, Scandinavia, the British 

 coast, and Shetland Isles (70—90 fathoms). 



Isaea longipalpus sp. nov. 



Eyes small, compound, circular. 



First antennae long and slender, more than ^\i as long as body, 

 with elongated flagellum ; first joint of peduncle stout and armed 

 with stout setae ; second joint slender, slightly longer than first ; 

 third joint short and narrow, about ^/s as long as second ; principal 

 flagellum considerably longer than peduncle, composed of numerous 

 elongated joints ; accessory flagellum long, made up of at least 

 4 segments. Second antennae shorter than first ; gland cone rather 

 prominent but not long ; third joint of peduncle slightly longer than 

 broad'; fourth and fifth joints long and subequal in length ; flagellum 

 about as long as last joint of peduncle, composed of about 6 joints. 



Mandibles strong, triangular, with principal cutting edge denticu- 

 lated and all parts well developed ; palp 3-jointed, the first of which 

 is rather long, only half as broad as long, second joint stouter than 



