414 Mr. H. A. Baylis on 
examination of several females did not lead to the confirmation 
of this idea. 
x A 
a. 
(A). C. boopis ; tail of female, seen from the left side. a., anus; v., vulva; 
va., vagina. } 
(B).. C. erassicauda ; outline of tail of female, drawn to the same scale 
of magnification as (A). 
As regards the caudal papille of the male, Leiper and 
Atkinson state that there are on either side eight in the 
