The Amphipoda of Bermuda. 21 



Second gnathopods with subrectangular epimeron higher than 

 long, having rounded angles ; second joint short and stout becoming 

 uniformly broader distally ; third joint slender, twice as long as broad ; 

 fourth joint narrower and shorter than third with posterior margin 

 convex and longer than anterior ; wrist, hand and finger as in first 

 gnathopod. 



Epimera diminishing in height posteriorly, that of first pereiopod 

 being slighth' lower than that of second gnathopod ; fourth joints 

 rather broad, due to formation of lobe on anterior margin in an- 

 terior group of appendages and on posterior margin in posterior 

 group ; third, fourth, and fifth pereiopods with second and fourth 

 joints broad ; sixth joints of all pereiopods provided with stout spine 

 at apex. 



Second and third pleopods with both rami well developed and 

 with peduncle bearing a stout prolongation medially which is pro- 

 vided with 3 coupling hooks at apex. 



Uropods, 2 pairs, biramous; peduncle of both pairs cylindrical 

 and extending to same distance posteriorly ; rami styliform with 

 somewhat rounded apices, outer one much longer and broader than 

 inner one ; outer margin of outer ramus of first with sparse setae, 

 apex with single spine ; second uropods with rami slightly longer 

 than those of first, both rami with outer margin very finely serrated 

 and provided with apical spine. 



Telson semicircular, not extending as far as peduncles of uropods ; 

 margin entire. 



Back provided with a rather conspicuous ridge ; abdomen rather 

 small. 



No sexual dimorphism. 



Length 5 mm. 



The species was represented by a male and a female collected 

 by Dr. W. G. VanName in 1901. 



Colomastix pusilla Grube, 1861. 



1861. Grube, Ein Ausflug nach Triest und dem Quarnero, 

 Berlin, 1861. 



Eyes small, round. 



First antennae short and stout, slightly longer than second ; ped- 

 uncle, stout and nearly twice as long as head ; flagellum rudi- 

 mentary, consisting of 3 ver\' short segments which are provided 

 with rather long setae; first joint of peduncle slightly longer than 

 either second or third, which are subequal in length, cylindrical 



