Drut/onjiies and their Prey. 



243 



liowever — individuals, that is, wliich are free alike from 

 pruinosity and discoloration — it is seen tliat chrysosligma 

 Incks the mid-dorsal black line and certain other black 

 inurkings which characterize the abdomen of hrachiale. The 

 condition of the Nyasaland specimens now under considera- 

 tion does not j)ermit of any useful comparison of abdominal 

 markings being made, either between themselves or witli 

 suitably preserved material of chrysostiyma and hrachiale 

 from other localities. 



The older males of hrachiale from the Lingadzi have the 

 distal two-thirds of their wings tinged with brown. Li the 

 female sex the colour is more intense and suffuses the entire 

 wing. In the males of chrysostigma from Monkey Bay the 

 wings remain clear, and very little colour makes its appear- 

 ance in the wings even of the females. 



The eyes of the Lingadzi hrachiale are decidedly green in 

 both sexes, whereas the eyes of the chrysostigma from Monkey 

 Bay are consistently brown. I have no notes as to the eye- 

 colours in the living insects. 



The entire collection of captors and prey, set out in the 

 subjoined tables (pp. 243-245), has been presented to the 

 British Museum (Natural History) by the Imperial Bureau 

 of Entomology. 



16* 



