﻿132 ERNEST E. AUSTEN — NEW AFRICAN 



as long as its breadth at lower extremity ; frontal callus mummy-brown, acicular 

 or lanceolate, its upper extremity produced into a median ridge ; palpi isabella- 

 coloured, drab, or greyish-fawn-coloured, proximal joint clothed below with 

 whitish hair of moderate length, terminal joint unusually slender, tapering to a 

 point and clothed on outer side with minute blackish hairs ; first and second 

 joints of antennae greyish cinnamon, clothed with black hairs, third joint clove- 

 brown, expanded portion of moderate breadth. Thorax : dorsum of main 

 portion without distinct markings, and clothed with minute, appressed, dark 

 brown hairs ; swelling in depression at each end of transverse suture isabella- 

 coloured, and clothed above with yellowish hair ; humeral and postalar calli and 

 lateral border of dorsum above base of wing on each side greyish cream-buff; 

 postalar calli each with a conspicuous tuft of longish white hair on outer margin ; 

 a small tuft of similar but shorter hair above base of each wing ; pectus and 

 pleurae pinkish buff or greyish cream-buff, clothed partly with whitish, partly 

 with dark brown or brownish hair ; dorsal surface of scutellum clothed with 

 appressed, glistening, light-coloured hair, which is for most part yellowish, but is 

 whitish on lateral margins and deeper in colour in centre and towards front. 

 Abdomen : posterior angles of tergites of all except last two segments light grey, 

 and clothed with shining silvery-white hair ; tergites of second to fifth segments 

 inclusive each with a light grey spot, more or less semi-circular in outline and 

 clothed with short, appressed, glistening white hair, on hind border in median 

 line ; tergite of first segment with a few yellowish hairs on and near hind margin, 

 in median line ; dorsum, except as stated, clothed mainly with short, appressed, 

 dark brown hairs, though the hairs immediately in front of each median spot are 

 more or less yellowish ; the grey ground-colour of the posterior angles of the 

 tergites of the second to the fifth segments inclusive extends inwards to some 

 extent, but does not reach the median spots ; ventral surface dark brown and 

 clothed with minute appressed hairs of same colour, hind borders of second to 

 fifth segments inclusive light grey, and clothed with short, appressed, silvery- 

 white hair. Wings : costal cells raw-sienna-coloured ; infuscation at tip of wing 

 may take shape of a border on each side of anterior branch of third longitudinal 

 vein and of distal portion of second longitudinal ; infuscation along hind border 

 occupies second and third posterior cells, fourth posterior cell except immediately 

 adjacent to discal cell, and distal halves of first and fifth posterior cells, and dies 

 away in distal extremity of axillary cell ; veins or portions of veins forming 

 distal boundary of basal cells somewhat infuscated ; veins mummy-brown or dark 

 brown ; stigma mummy-brown, narrow, and elongate. Squamae sepia-coloured, 

 borders darker. Halteres dark mummy-brown, tips of knobs sometimes paler. 

 Legs : coxae greyish, clothed with dark brown hair, front pair with greyish hair 

 at base anteriorly ; femora and hind tibiae dark brown, clothed with similarly 

 coloured hair ; front tibiae sepia-coloured at extreme base, then cream-coloured, 

 except distal third or rather less, which is dark brown ; cream-coloured portion 

 of front tibiae clothed anteriorly with minute black or dark brown hairs, which 

 however may be more or less interspersed with or replaced by minute, glistening, 

 cream-coloured hairs ; middle tibiae dark mummy-brown, dark brown at distal 

 extremity ; front tarsi clove-brown, not expanded, middle and hind tarsi dark 

 brown. 



