284 



ERNEST E. AUSTEN — NEW AFRICAN 



Head: front slightly narrower above, face broad below, clothed like jowls and 

 basioccipital region with whitish hair ; front above callus yellowish-grey, clothed 

 with clove-brown or blackish hair, hind margin of vertex clothed with whitish 

 hair ; frontal callus shining clove-brown, transversely elongate and extending 

 almost from eye to eye, its antero-posterior diameter only about one-fourth the 

 length of its transverse diameter, its upper and lower margins parallel ; on upper 

 portion of front a narrow, shining clove-brown, transversely elongate callus 

 extends outwards from each posterior ocellus, tapering towards its outer 

 extremity and not reaching the eye ; a small, shining clove-brown, median spot 



Fig. 1. — Chrysops pallidula, Austen, £• X 6. 



is also visible in front of and in contact with the anterior ocellus ; proximal 

 joint of palpi mouse-grey, clothed with whitish hair, terminal joint drab- 

 Grey, of moderate size, clothed with silvery-white hair and bluntly pointed 

 at distal extremity ; first joint of antennae short and swollen, clothed above 

 with clove-brown or blackish and below with whitish hair ; upper surface of 

 first joint of antennae usually dull raw-sienna-coloured, more or less overspread 

 with slate-grey, under surface of first joint buff or cream-buff, but sometimes first 

 joint entirely slate-coloured above and only narrowly cream-buff below ; second 

 joint of antennae short and stout, either entirely slate-coloured or blackish slate- 

 coloured, except at extreme base below, or slate-coloured above and buff below, 

 hairy covering of second joint agreeing with that of first joint ; third joint of 

 antennae clove-brown or blackish clove-brown. Thorax : scutellum greyish 

 cinnamon- or greyish fawn-coloured ; pleurae and pectus smoke-grey ; thorax 

 entirely clothed with whitish hair, which is shorter on dorsum than on pleurae. 

 Abdomen : dorsal scute of first segment with a median slate-grey spot at base, 

 not reaching hind margin and largely concealed by scutellum ; whitish-grey 

 transverse band on dorsal scute of second segment deeper towards each lateral 



