82 BRITISH COPEPODA. 



Though decidedly Cyclopoid in general form and 

 appearance, this curious genus is perhaps more nearly 

 allied to the Calanidce, seeing that it agrees with the 

 members of that family in possessing a biramose 

 inferior antenna, and a large 2-branched mandible- 

 palp ; the maxillae and foot-jaws also agree with those 

 of the Calanidce, though the feet, except in the fifth 

 pair, resemble more closely those of the Cyclopidse. 



M. Boeck thought that this genus belonged to the 

 male of his Misophria ; but in this opinion I am unable 

 to agree. Of the species first described (Pseudocy clops 

 crassiremis) it is true that I found only the male ; but 

 of P. obtusatus I have taken many specimens, both 

 male and female. From Misophria the genus is clearly 

 distinguished by several characters, notably the follow- 

 ing: the basal joint of the secondary branch of the 

 posterior antenna is excessively broad and truncate, 

 the succeeding joint or joints being very narrow, and 

 the fifth foot in the female is distinctly 2-branched, 

 each branch being triarticulate. 



1. PSEUDOCYCLOPS cuASSiREMis, Brady. Plate VII, figs. 



1, 2, and Plate XII, fig. 14. 



Pseudocyclops crassiremis, Brady. Nat. Hist. Trans. Northumber- 

 land and Durham, vol. iv p. 431, 

 pi. xvii, figs. 18 (1872). 



Left anterior antenna of male (PI. VII, fig. 2) 17- 

 jointed, basal joint large and stout, those next following 



