284 



GLOSSINA MORSITANS 



[CH. 



In every instance the ground was well drained and often the 

 slope was very sharp. All the pupa cases except four were 

 from trees near the bank of a river or wet vlei, where there was 

 shade and where the " fly " congregates in the dry weather. 

 The four except ed were taken from the base of a large Baobab 

 tree on the summit of a hill not far from a river (the Sinyama) 



Fig. 74 Base of a tree in Nyasaland shewing one of the positions (indicated 

 by arrows) in which the pupae of Glossina morsitans may be found. (After 

 Jack.) 



it is true, but away from the influence of the water, there being 

 no shade about the roots in August. This points to the fact 

 that the larvae are deposited in any convenient situation, when 

 the fly is scattered during the wet weather. . . . 



" The summary of the investigations into the breeding 

 haunts is therefore, that in the dry weather the larvre are 

 deposited in sheltered positions about the bases of big shady 



