TABANINAE. — PART IV. 287 



portion, except at base, clothed with minute black hairs ; first joint of antennae 

 in Q (see fig. 2a) large, swollen and cylindrical, dark brown or dark mummy- 

 brown, more or less greyish pollinose on inner side, elsewhere shining, sparsely 

 clothed above and below with short, dark brown hair ; second joint of antennae 

 in Q agreeing in coloration with foregoing though occasionally paler, with 

 exception of its upper and lower angles, which are often much produced ; third 

 joint of antennae in Q shaped as described in diagnosis above, its expanded portion 

 clove-brown, the terminal annuli blackish. Thorax : dorsum dark sepia- 

 coloured, with narrow grey markings as shown in fig. 2, and sparsely clothed 

 with minute, appressed, yellowish hairs, which in case of c? are mixed with 

 longer fine and erect brownish hair ; pleurae and pectus smoke-grey or mouse- 

 grev, clothed almost entirely with either brownish or whitish hair, or partly with 

 brownish and partly with whitish hair. Abdomen : first three or first four dorsal 

 scutes in cT seal-brown, remainder clove-brown, hind borders of second, third and 

 fourth segments in (J smoke-grey, each expanded in middle line into a forwardly 

 directed triangle, which may contract into a narrow median stripe, extreme hind 

 margins of fifth and following dorsal scutes in ($ yellowish-grey or smoke-grey, 

 fifth and sixth dorsal scutes in <$ each with a pair of elongate grey spots ; 

 dorsum in Q clove-brown, with conspicuous grey markings as shown in fig. 2, 

 and with lateral extremities of first four scutes broadly grey ; dorsum in c? 

 clothed with dark brown or brownish hair, mingled with yellowish hairs on grey 

 hind borders of third and following segments, dorsum in Q on clove-brown areas 

 clothed with minute, appressed hairs of similar colour, on grey hind borders 

 sparsely clothed with appressed pale yellowish hairs, and on lateral extremities 

 of first three scutes clothed partly with appressed and partly with outstanding 

 hair of same colour ; venter in (? greyish mummy-brown proximally, greyish 

 clove-brown distally, clothed with minute, appressed dark brown hairs, which on 

 third and fourth segments and posterior angles of fifth segment are sometimes 

 replaced by glistening yellowish hairs, venter in Q grey from base to hind 

 margin of second segment, then greyish clove-brown, clothed on third segment 

 with minute, appressed yellowish hairs, and on fourth and following segments 

 with minute, appressed blackish hairs. Wings : sepia-coloured, with light mark- 

 ings shown in fig. 2 well developed and conspicuous ; apical sinuous mark double, 

 or at least showing a trace of a second mark beyond principal one ; stigma 

 elongate, well developed and conspicuous, dark brown, its proximal extremity 

 pale ; quadrate dark blotch below stigma conspicuous, unbroken, and well defined, 

 though not always actually darker than remainder of ground colour ; veins 

 mummy-brown or dark brown, anterior transverse vein, extreme base and base of 

 fork of third longitudinal vein, fifth longitudinal vein before its bifurcation and 

 base of its anterior branch, and distal boundary of discal cell darker than veins 

 elsewhere. Squamae : pale isabella-coloured. Halteres : stalks pale cream-buff, 

 knobs dark brown or seal-brown surrounded by a narrow cream-buff band. Legs : 

 coxae clothed chiefly with whitish hair, front pair sometimes also with brownish 

 hair towards distal extremities, front and middle coxae greyish sepia-coloured, 

 hind pair mouse-grey ; femora, tibiae, and tarsi dark brown or dark sepia- 

 coloured (front tarsi in both sexes, as also front femora and front tibiae in 



32926 C 



