266 BOPYRID. 
scribed by Fritz Miiller (Archiv. f. Naturg. xxvii. 
p. 10, and Ann, Nat. Hist. 3 ser. x. p. 87, pl. 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. pygmea 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 antennze, 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. 
