;554 Mr. E. E. Austen on new 



line a shining black more or less triangular callus^ apex oE 

 which is directed ujnvards, while its base rests on anterior 

 boundary of infuscated area; lower part of sides of face 

 clove-brown, clothed, at least in part, with black hair, central 

 portion of face thinly clothed on each side with whitish 

 hair ; jowls and basioccipital region densely clothed with 

 shining white hair; jjalpi greyish clove-brown, proximal 

 joint clothed below with yellowish-white hairs, and on the 

 outer side with blackish hairs ; proboscis relatively short — 

 as compared with that of D. compactus , Austen, shorter and 

 stouter, the label la being also shorter and more curved 

 downwards at the tips, while the part of the labium imme- 

 diately preceding them is more distinctly swollen below ; 

 first joint of antennce clove-brown, greyish pollinose, the 

 sparse hairs on it black, second joint either agreeing with 

 hrst in coloration or more or less greyish ochraeeous-buff or 

 greyish fawn-coloured, third joint dusky brownish chestnut. 

 Thorax : pleurae and pectus agreeing with dorsum in colora- 

 tion, and clothed with yellowish hair. Abdomen : dorsum of 

 first segment greyish pollinose on an orange-buff ground, 

 with in centre a slate-grey blotch, which, however, does not 

 project much beyond hind margin of scutellum ; hairy 

 covering of dorsum of first segment bright orange-buff, in 

 some specimens paler (yellowish or yellowish white) in 

 centre and immediately on each side of middle line; dorsum 

 of second segment ochraceous, tawny-ochraceous, or tawny, 

 with, in middle line, a larger or smaller greyish- black spot, 

 usually more or less triangular in shape, with its base 

 resting on front margin and its blunt apex extending scarcely 

 if at all beyond middle of segment; on each side of dorsum 

 of second segment is a larger or smaller blackish blotch, of 

 irregular shape and scarcely if at all visible from above ; 

 dorsum of second segment clothed in front with minute, 

 appressed, black hairs, and on hind mai'gin, on posterior 

 angles, and on more than posterior half of each lateral third 

 with glistening, appressed, silvery-white hair, which in centre 

 of hind border and anteriorly is interspersed with oehrcous 

 hairs ; dorsum of third segment, though normally as described 

 in diagnosis above, sometimes showing an irregular paler 

 (chestnut) area on each admcdian fifth ; hind border of 

 dorsum of third segment clothed with ap))ressed silvery-white 

 (in middle line sometimes pale ochre-yellow) hairs, forming 

 a conspicuous band across posterior third of segment, or even 

 in some instances rather more ; hind border of dorsum of 

 fourth segment clothed partly with ochre-yellow, partly with 

 silverv-white hairs : hind margins of dorsum of fifth and 



