232 



THE MALE GENERATIVE ORGANS 



appointed to find subsequently that the female was known to Brady 

 and that I was only second in the field, still, it was a consolation 

 to know that my observations concurred with his, and what was 

 still more gratifying was, that he gave no account of the male, nor 

 did he figure the male genital organs. I came, consequently, to 

 the conclusion that he had not seen it, and determined to 

 continue my investigations in that direction. 



The following is a comparative description of C. cinerea, male 

 and female : — 



Cypris cinerea (male), Rosseter. 



Shell, oval; colour, ash-grey; 

 second antenna bears five long 

 setoe, the rest short; its claws, and 

 those of first foot, are not serra- 

 ted. The second foot bears three 

 setEe, one extremely long, being 

 two-thirds the length of foot, 

 and two short setae of equal 

 length. Post abdominal-rami 

 as in female, second maxillae 

 chelate; length, one-fortieth of 

 an inch ; breadth, one-fifty" 

 seventh of an inch. 



Male organs consist of Bursa- 

 copulatrix, with intromittent 

 organ, and a paired mucous 

 glandulosa testis. Locality, 

 Churchwood, Harbeldown, Can- 

 terbury. 



Cypris cinerea (female), Brady. 



Carapace, oval ; surface of 

 shell, finely and closely punc- 

 tate ; colour, ash-grey. The 

 second antenna has three setee, 

 very long, the rest short ; its 

 claws, as those of first foot are 

 long, slender, and destitute of 

 serratures. Terminal set^e of 

 second foot, very stout from 

 base to the middle, then con- 

 stricted, and tapering to the 

 points. Post-abdominal-rami, 

 stout ; claws, short and stout ; 

 the lateral sette, and those on 

 inner border of the ramus, very 

 short and slender. Length, 

 one thirty-fifth of an inch ; 

 breadth, one-fifty-fifth of an 

 inch. 



On comparison, it will be seen that there are some particulars 

 in the description of the male which do not correspond with 

 Brady's description of the female, but these are comparatively 

 slight. I allude, in the first place, to the filaments of the second 

 antenna, to which I have given very careful consideration, and 

 find that the same number of filaments exist in both sexes. The 

 long filaments, as they approach their termination, give off very 

 fine branches. These might easily be overlooked, and only 



