124 



circular cap, and one can always see the walls of the cocoon within. 

 In the course of time the cocoon tends to shrink, the result being that 

 it draws in with it the margin of the hole of exit in the pupa-case, so 

 that this is no longer circular but somewhat oval, a condition never 

 seen in the case of a normal puparium. 



Fig. 13. Anastatus viridiceps, Wtst., <j>, a minute Hymenopteron of the 

 Family Encyrtidae, parasitic in the larval stage in pupae of Glossina morsitans 

 in Northern Rhodesia. (After Waterston, 160.) 



" There has been no difficulty at all in dealing with the Mutillids in 

 captivity, for all, except two, one of which was accidentally drowned, 

 are still alive now, one or two of the earliest specimens being several 

 weeks old. The original male placed in a box with the female shortly 

 after the emergence of the latter manifested the greatest excitement, 

 running about with its antennae on the ground on the track of the 

 female, which it overtook after a considerable chase and immediately 

 seized, pairing taking place almost at once. It is noteworthy that in 



