African Phlebotomic Diptera. 347 



brown. Legs : femora clothed beneath with long and fine 

 brownish hair. 



Northern Nigeria : S. Bornu, between September and 

 December, 1908 (Dr. H. A. Foy). 



As stated above, at the end of the description of the fore- 

 going species, Chrysops pusillula belongs to the well-marked 

 group which also includes C. ciliaris, Lw., C. fuscipennis, 

 Ricardo, and C. laticeps, Austen, from all of which it can 

 readily be distinguished by its small size and by its dark- 

 coloured abdomen not being lighter at the base. 



Chrysops inflaticornis , sp. n. 



? . — Length (3 specimens) 8 to 9"5 mm. ; width of head 

 2*75 to 3 mm. ; width of front at vertex 1*2 mm. ; length of 

 wing 8 to 8*75 mm. 



Dorsum of thorax marked alternately with greyish olive- 

 brown and smoke-grey longitudinal stripes ; abdomen ochra- 

 ceous-buff, dorsum of second and following segments each with 

 a more or less indistinct russet-brown transverse band, second 

 to fifth segments inclusive each with hind margin and a median 

 triangle on hind border pale ; first and second joints of an- 

 tenna shining tawny ochraceous, first joint strongly swollen, 

 elliptical- oval ; wings with costal border and sharply defined, 

 oblique, transverse band, tapering towards hind border, mummy- 

 brown, apical blotch on cost a present and below it a fainter 

 infuscation, including tip of wing and extending along hind 

 border as far as axillary cell and anal angle, meeting trans- 

 verse band in fourth or fifth posterior cell ; legs ochraceous, 

 none of the tibia incrassate, hind tibia with a fringe of short 

 hair on outer side. 



Head broad, cream-coloured pollinose, upper half of front 

 yellowish pollinose ; front broad, frontal callus either clove- 

 brown, raw-sienna-coloured in centre above, or raw-sienna- 

 coloured, clove-brown on lower margin and. towards each 

 lateral extremity ; frontal callus fairly prominent, in shape a 

 wide and low triangle, with apex directed upwards and blunt, 

 and the lateral angles rounded off and either in contact with 

 or only narrowly separated from the eyes ; ocelli somewhat 

 widely separate, each ocellus surrounded by a small dark 

 brown spot, the spot encircling each upper ocellus sometimes 

 taking the shape of a narrow triangular streak, extending 

 outwards towards eye ; face broad, somewhat arched and 

 prominent, facial tubercles wanting, no shining spot on 

 jowls ; front, face, jowls, and lower surface of head clothed 

 with erect yellowish hair, longest below ; palpi clothed with 



