30 ENTOMOLOGICAL NEWS. [Jan., ’08 
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 (Annoma arcens 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 albofasciata Macq. 
9. 
No. 524. Culex hirsutipalpis Theob. (Dipt.) 
This mosquito is not only a great nuisance but, like H. 
simplex (vide antea) is interesting for other reasons. The 
é ¢ 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 “Culex 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 pupze} 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 peregrinatoria 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- 
+ Extraordinary Number of Pupae of Culex hirsutipalpis, Entomologist, May, 1906, 
p. 116. 
