African Phlehotomic Diptera. 95 



middle ; wings partly hyaline, ivith tips and a broad border to 

 hind margin, not quite reaching axillary incision, brown with 

 light markings ; front tibia dark broivn, someivhat incrassate, 

 ivith an ill-defined pale band near base, middle and hind tibice 

 ochraceous-bujf, without bands, but tips of middle tibice some- 

 times broivnish. 



Head: face^ jowls, and central portion of front yellowish 

 grey, sides of front olive-grey ; frontal callus narrow, ex- 

 panding on each side and extending from eye to eye, upper 

 margin straight, produced into an upwardly directed triangle 

 in centre, no dark median spot below callus ; lateral frontal 

 spots clove-brown or black, well-marked and conspicuous, 

 not in contact with eyes and each surrounded with a light 

 grey area when seen from above ; median frontal spot incon- 

 spicuous or absent ; paljoi fawn-coloured, terminal joint 

 moderately swollen, blunt at tip, clothed with short black 

 hair ; first and second joints of antenna reddish fawn- 

 coloured, first joint not swollen or elongate, third joint dark 

 brown or reddish brown, lighter at base, narrow and elongate, 

 with upper and lower margins parallel, last three annuli 

 clove-brown, last annulus equal in length to the two pre- 

 ceding annuli taken together. Thorax : all four dark brown 

 stripes on dorsum often extending to hind margin, but ad- 

 median pair sometimes suddenly becoming faint at one-third 

 of the distance from transverse suture to hind margin ; 

 scutellum with a pair of sharply defined dark brown elongate 

 marks (continuations of the outer stripes on the main portion 

 of the mesonotum). Abdomen: dorsum and venter clothed 

 with short, appressed, pale chrome-yellow hairs ; dark brown 

 stripes on dorsum converging towards distal extremity, and 

 on seventh segment often in contact, each stripe composed 

 of a series of quadrate blotches (one on each segment), which 

 on the distal segments are usually represented only by their 

 inner and a poriion of their posterior margins ; venter with 

 a brown median stripe; not sharply defined. Wings : basal 

 cells entirely, anal cell except distal extremity, hyaline ; 

 discal cell and basal two-thirds of first posterior cell only a 

 little less clear, without markings, or merely with a few 

 faint indications of darker transverse flecks; marginal cell 

 as far as fork of third vein clear, except for more or less 

 indistinct traces of two or three interrupted or semi-inter- 

 rupted darker cross-bars ; outer half of rosette round fork 

 of third vein distinct, composed of detached light marks ; 

 light sinuous mark in tip of wing below second longitu- 

 dinal vein sharply defined, as also its continuation in shape 

 of a series of detached, sometimes semi-oblique light marks 



