﻿ERNEST E. AUSTEN— NEW AFRICAN TABANIDAE — PART III. 41 i 



surface of proximal portion ; first joint of antennae pale ochreous, clothed like 

 second joint with minute black hairs, first joint of moderate length, expanding 

 from base to distal extremity when viewed from side, cylindrical (narrower at 

 base) and appearing moderately stout, though not actually swollen, when seen 

 from above, upper distal angle of second joint moderately produced, third joint 

 cinnamon-coloured or brownish (annulate portion often dark brown), expanded 

 portion as viewed from side varying in breadth in different individuals, but with 

 its upper margin usually more or less angulate at a point one-third of its length 

 from base ; from this point the expanded portion of the third joint, which is here 

 at its broadest, tapers more or less rapidly to its distal extremity. Thorax : 

 dorsum with grey markings as shown in fig. 2, its anterior surface also grey ; 

 short hairs thinly covering dorsum (including scutellum) yellowish, mixed, except 

 on scutellum, with darker hairs ; pleurae and pectus whitish-grey or smoke-grey, 

 clothed with whitish hair. Abdomen : pale spots on dorsum not present on first 

 segment, and often indistinct on second, but on subsequent segments clearly 

 visible, those on last two or last three segments grey ; dorsum — except lateral 

 margins and hind borders of segments, which are clothed with yellowish or ochreous 

 hairs — clothed with minute, appressed, blackish hairs ; venter buff, pinkish-buff, 

 or ochraceous-buff, light greyish pojlinose, penultimate and antepenultimate 

 segments usually more or less mouse-grey, last segment greyish clove-brown, 

 hind borders of second and following segments cream-buff, last segment (except 

 hind margin and lateral extremities) clothed as usual with coarse, erect, black 

 hair, remainder of ventral surface clothed with minute, appressed, yellowish hair, 

 hind margin and lateral extremities of ventral scute of last segment also clothed 

 with yellowish hair. Wings : the two whitish marks shown in fig. 2 crossing the 

 discal cell often fused together, but on the other hand sometimes wider apart 

 than in the specimen illustrated. Squamae isabella-coloured, borders darker. 

 Halteres : knobs cream-buff or buff, usually more or less brownish above and 

 below, at least at base, stalks cream-coloured. Legs : front coxae buff, greyish 

 pollinose, middle and hind coxae smoke-grey, all coxae clothed with glistening 

 whitish hair, front pair also with some black hairs on distal two-thirds of anterior 

 surface ; femora buff, front pair sometimes more or less mouse-grey, middle and 

 hind pairs often greyish at base ; front femora clothed mainly with minute black 

 hairs, but proximal portion of under surface clothed with glistening whitish hairs, 

 some whitish hairs also present on posterior surface, middle and hind femora 

 clothed with glistening whitish hairs, with which on distal portion of their upper 

 surfaces minute black hairs are intermingled ; front tibiae not swollen, distal two- 

 thirds or rather less clove-brown and clothed with minute black hairs, with which, 

 at least on posterior and under surfaces, except at distal extremity, minute, 

 glistening yellowish-white hairs are occasionally intermixed ; extreme base of 

 front tibiae isabella-coloured and clothed with minute black hairs ; portion of 

 front tibiae between isabella-coloured base and clove-brown distal extremity 

 cream-coloured, clothed with minute, appressed, glistening yellowish-white hairs ; 

 middle and hind tibiae each with two pale (cream-buff) bands, as shown in fig. 2, 

 pale bands clothed with yellowish hair, middle and hind tibiae clothed elsewhere 

 with black hair, hind tibiae not incrassate ; front tarsi clove-brown, middle and 

 hind tarsi mummy-brown, extreme base of first joint of middle tarsi and proximal 



