286 E. E. AUSTEN TABANID^ COLLECTED IN 



hairy coverino- of the dorsum of the thorax is ochre-yellow, and the infuscated 

 distal portion o£ the wing is of a rich, dark purplish-brown, forming a 

 sharp contrast with the orange-ochraceoiis proximal portion. 



Genus DOKCALCEMUS, Austen. 

 Annals and Magazine of Natural History, ser. 8, vol. vi, October 1910, p. 337. 



DorcalcBmus auricomus, sp. n. (Fig. 3.) 



? . — Length (6 specimens) 14 to 16*4 mm. ; width of head 4*8 to 5*2 mm.; 

 width of front at vertex 0*8 to 1 mm. ; distance from upper margin of 

 occiput to anterior extremity of face just under 4 to 4 mm. ; length of 

 proboscis 8*4 to 10 mm. ; length of wing 12 to 14 mm. ; greatest width 

 of wing 4' 5 to 5'2 mm. 



Head yellowisli- or wliitisli-grey, with dark markifigs ; thorax, including 

 scutellum, oUve-hroivn, greyish pollinose ; dorsum of abdomen black, fourth, 

 fifth and sixth segments and also hind borders of second and third clothed ivith 

 short, appressed, shining, orange-ochraceov s (^golden-yellow) or ochre-yellov: 

 hair, posterior angles of first and sides of second segment usually tawny- 

 ochraceous or ochraceous, hind borders of all segments so far as visible, from 

 first to sixth inclusive, usually ochraceous-buff or buff, first segment sometimes 

 greyish pollinose except dark brown median area extending a little beyond 

 scutellum ; wirigs light mummy-brown, the colour usually ')nore intense 7iext the 

 veins, costal cells and stigma ochraceous ; femora black or blackish-brown, 

 extreme tips, tibice, and under surface of tarsi ochraceous-buff or buff, tips of 

 hind tibiae and of front and middle tibice on inside, also upper surface of tarsi, 

 brown or brownish. 



Head : face conical and prominent, sides of upper part of face clothed 

 with pale yellowish hair, lower part of sides of face brown ; upper half of 

 front, except extreme lateral margins, dark olive-brown, with a shining, 

 clove-brown, more or less triangular or sagittate callus ; jowls and basi- 

 occipital region clothed with straw-yellow hair ; palpi clove-brown ; proboscis 

 black ; first and second joints of antennce clove-brown, greyish pollinose, 

 third joint ferruginous. Thorax : dorsum, including scutellum, clothed 

 with ochre-yellow hair, a few brownish hairs in front of prsescutellar groove; 

 greyish pollinose covering denser on dorsal surface of scutellum and sides 

 of dorsum than elsewhere ; pleurae clothed with straw- yellow hair. 

 Abdomen : typical specimen with a large, black, median area on dorsum of 

 first segment, extending to hind margin and tapering somewhat posteriorly ; 

 dorsum of first segment clothed with orange-ochraceous or ochreous hair, 

 which as usual is longer on the sides ; dorsum of second and third segments, 

 except sides, or at least posterior angles^ and hind borders, clothed wnth 



