284 
MALCOLM BURE 
These are of the brachypterous form named by de Bormans, in MS., 
var. Dietzi, but I do not know if he ever published this one. The scarce 
melanic form is var. Cagnii of Borelli. 
27. Diaper asticus sansibaricus, Karsch. — German East Africa : 
Mto-Ja-Kifaru, 4 cf, 1 $ (Katona). 
These are of the very slender dark form, the true sansibaricus of 
Karsch, which is very different in appearence from D. Mackinderi, 
Burr, but owing to the existence of intermediate forms, I am very en- 
clined to regard them as the two extremes of a plastic species. 
