3O ENTOMOLOGICAL NEWS. [Jan., 'o8 



get their fingers badly nipped in return, as the insect's man- 

 dibles are sharp and powerful and can draw blood. When a 

 nest of driver ants (Annonia arccns Westw.) goes on a raid 

 it is a sight to see the crickets (comparatively elephantine in 

 size) driven from their holes, stridulating indignantly and 

 struggling in vain to rid themselves from their foes. 



8. 



No. 538. Sarcophaga africa Wied. (Dipt.) 

 This handsome, viviparous fly breeds in faeces, putrid meat, 

 etc. I have elsewhere * published an account of experimental 

 myasis which I produced in goats, using this species of fly and 

 the allied Sarcophaga olbofasciata Macq. 



9- 



No. 524. Culc.v hirsutipalpis Theob. (Dipt.) 



This mosquito is not only a great nuisance but, like H. 

 simplex (ride antca) is interesting for other reasons. The 

 (5 $ from this region differ from the type in having no pale 

 band at the apex of the palpi, and Mr. Theobald's diagnosis 

 of my first specimens was "Culcx sp. nov. near hirsutipalpis 

 Theob." A suite of specimens which I bred from eggs shows 

 this sexual dimorphism to be constant and also reveals a re- 

 markable variation in size, some individuals being a third 

 smaller than the type. I have published some observations on 

 the pupae f which occur in amazing numbers at the last of the 

 rains. The eggs are black and laid in rafts. They breed out 

 readily in captivity. I should say before leaving this mosquito 

 that the figure of the $ ungues on p. 381 of Theobald's Mono- 

 graph is incorrect. 



10. 



No. 137. Schistocera pcregrinatoria L. (Orthopt.) 



The ravages of these pests in some parts of West Africa 

 are almost incredible. I once witnessed the advance of the 

 early wingless form through the Chisanje country to the east 

 of Benguella. Hardly a green thing was left behind them. In 



* Experimental Myasis in Goats, etc., Journal of Medical Research, Jan., 1906. p. 439. 

 t Extraordinary Number of Pupae of Culex hirsutipalpis, Entomologist, May, 1906, 

 p. 116. 



