SECONDARY SKXLAL CHARACTERS OF CRAYFISH I 22~ 



the normal male appendages were lacking and the appendages 

 were only about half normal size. 





Q 



B 



i (rating tin- character of the i 



! tin- in: 



I Normal of the first abdominal > 



X-iriiuil ru male appendage of first 



Sin. ill 1 ut male-lil ndage occurring on ; ,:ent 



i the inti-i.-i-xes. 



< >n i In- MI b-e< | unit dates specimens wen- rollr.-ted I'n.m \ 

 p. in- of tin Like \\ith results agp essentially with those 



first obtained. In all, over one hundivd abi-rr.un k-in 

 v.i-i'i- j'U->rr\fd and nia.iy more \\' iniiiK'd and 



I I Km tlu- ba>i> of the data gathered it was r.-timaied tliat .^> 

 cent, of all the females of Ctimbarus virilis in the lake possessed 

 at least one set of male -erondary sexual characters. 



Over two hundred male- nf both form I. and form II. lia\ e been 



