soMe British East African Bidterfiies. 



543 



The indirect evidence of injury inflicted on fresh or not 

 greatly worn dry-season forms by birds, when the wet 

 individuals so often exhibited strongly marked indications 

 of ordinary wear and tear, may throw light on the bionomic 

 value of the pattern of the phase to which the latter 

 belonged. E. B. P.] 



Eahai, July 1, 1908. 

 I have been up country again and have one more small 

 contribution towards the elucidation of our old friend, 

 Precis sesamus. I was at the Mukaa Hills, about 30 miles 

 E. of Machakos, in the second week in June, You will 

 perhaps remember that Hinde took about equal propor- 

 tions of the two forms a little earlier than this at Machakos 

 in 1900. The present season has been marked by deficient 

 rainfall, and the heavy rains did not begin till April 20, 

 which was very late. 



