266 BOPYRID^E. 



scribed by Fritz M tiller (Archiv. f. Naturg. xxviii. 

 p. 10, and Ann. Nat. Hist. 3 ser. x. p. 87, pi. 2), we are 

 led to the conclusion that the animal we figure from 

 our own drawing is a young male of this genus, and that 

 in its full-grown state it may be somewhat modified in 

 the form of its locomotive organs. 



The female of C. pygmcea is now, however, satisfac- 

 torily known by the researches and figures of Lilljeborg. 

 It consists of two separate portions in its adult ovigerous 

 state, the anterior being convex and smooth on the upper 

 side, and concave beneath, composed of four segments, 

 of which the two central ones are the largest ; the first, 

 or head properly so called, constituting an organ by which 

 the animal affixes itself upon the Peltogaster. The hind 

 part of the body is exarticulated, sac-like, kidney-shaped, 

 and convex above, with a slit on its underside through 

 which the young are expelled. There is not the slightest 

 vestige of antennae, eyes, mouth-organs, prehensile or 

 branchial legs. 



Our specimen of the supposed male was taken with 

 the dredge off Guernsey by the Rev. A. M. Norman, 

 not attached to any animal, but he found it in a bottle in 

 which Crustacea, for the most part Amphiphods, had been 

 put. 



