168 &, E. AUSTEN—THREE NEW SPECIES OF THE GENUS CHRYSOPS, &C. 
C. wellmanii are still unknown, and it is consequently at present impossible to 
make a complete comparison of the two species, the latter of which, however, 
apart from less conspicuous characters, can at once be distinguished from C. cana 
by the general coloration of its abdomen, which is ochraceous-buff or tawny. 
The milk-white hue of the abdomen of C. cana, with its thick covering of white 
hair, will indeed distinguish the species from any other African Chrysops at 
present described. 
While no information as to its habitat has yet been received, the remarkable 
coloration of the insect described and illustrated above would seem to indicate 
adaptation to existence in a sandy or desert region, 
