ERNEST E. AtrSTEN — DIPTERA. 97 



basal half of middle femora ; fringe of bristles (ciliation) on outer side of hind tibiae 

 long and regular. 



Hah. Mubuku Valley, E. Euwenzori, 5000-7000 ft., loth Jan. 



Sericophoromyia claripilosa may be distinguished from 6'. dasyojps Wied. inter alia 

 by the darker colour of the hairy covering of the eyes, the sides of the face being 

 narrower and bearing blackish instead of pale yellow hair, the ciliation of the facial 

 ridges being confined to the lower third instead of extending above the middle, the 

 silky thoracic hair being restricted in extent as above described instead of extending 

 over the whole thorax, including the disc of the scutellum, the upper surface of the 

 seutellum being without short, scattered, black bristles, and by the tibite and tips of 

 the middle and hind femora not being tawny. 



Subfamily Dexiinje. 

 Dexia Mg. 

 Dexia Meigen, Systematisclie Beschreibung der bek. Europ. zweifl. Insekten, v.^ 1826, p. 33. 



Dexia inappendiculata, sp. n. (Plate III. fig. 11.) 



6 . — Length (2 specimens) 11"5 to 12 mm. ; width of head 2'8 mm. ; width of front 

 at vertex 0'6 mm. ; greatest width of abdomen 3'4 mm. ; length of wing 10"4 mm. 



Rather narrow-bodied and elongate ; thorax Naples yelloto pollinose, dorsum marJced 

 with four interrupted and incomplete longitudinal black stripes, as in Dexia rustica 

 Fabr. ; abdomen ochraceous-htff, yellowish polli?iose, dorsum ivith a fairly broad, longi- 

 tudinal, clove-broion stripe, extending from base to apex, interrupted on front margins 

 of segments, and expanding somewhat on hind margins ; ivings sepia-coloured, moderately 

 dark, bend of fourth longitudinal vein without an appendix. 



Head ochraceous-buif, yellowish pollinose, frontal stripe dark mummy-brown ; bristles 

 and hair, except yellowish hair on basi-occipital region, entirely black ; facial septum 

 well developed ; palpi small, buff; antennoe ochraceous-bufF. Thorax clothed ex- 

 clusively with black hair and bristles. Abdomen also clothed with entirely black hair 

 and bristles ; dorsum with hind borders of all segments more or less dusky, partly 

 owing to each macrochaeta standing on a small, circular, dark clove-brown spot ; venter 

 with median, longitudinal, clove-brown stripe, which, except on last segment or last 

 two segments, appears double, since inner edges of scutes alone are pigmented. 

 Wings : small transverse vein darker than other veins, posterior transverse and distal 

 portion of fourth longitudinal vein slightly suffused with brown. Sq^uamce and halteres 

 buff. Legs tawny-ochraceous, tarsi clove-brown ; all legs slender and elongate, clothed 

 with black hair and bristles, proximal third of front tibiae distinctly narrowed. 



Hah. Euwenzori, 7000-8000 ft. [G. F. Scott Elliot). 



In the coloration of the body Dexia inappendiculata presents a general resemblance 

 to the common European I), rustica Fabr., from which, however, it may be 



VOL. XIX.— PART I. No. lo.— October, 1909. o 



