288 EKNEST E. AUSTEN — NEW AFRICAN 



hairs, which, ou middle aud hind tarsi, are mixed with mimite bhick hairs ; distal 

 extremities of joints of front tarsi fringed on each side with longer hairs. 



Q . — Head light grey, face, jowls, and basioccipital region clothed Avith whitish 

 hair ; front narrower below (at louver extremity about four-fifths as wide as at 

 vertex), upper two-thirds (except sides) clothed with short, erect, blackish hairs, 

 lower third clothed with minute, appressed, Naples-yellow hairs, which also 

 extend on to sides of upper portion : just below middle of front most specimens 

 exhibit a mummy-brown mai'k, which is in contact with the eye ou each side and 

 is sometimes shaped like a wide V or nearly straight transverse band, but more 

 usually consists of a downwardly directed median portion (generally the only 

 part of the mark visible when the insect is viewed directly from above*'), con- 

 nected with each eye by a curved, transverse offshoot : frontal callus in absolutely 

 uudenuded specimens entirely concealed by the grey poUinose covering of the 

 head, but when exposed flat, small, yellowish horn-coloured and usually semi- 

 circular in outline, with its straight edge resting on the upper margin of the 

 subcallus, and elsewhere with a na.rrow mummy-brown border, which is widely 

 separated from the eye on each side ; in specimens in which the frontal callus 

 is not fully exposed, its position is nevertheless often indicated by its mummy- 

 brown upper margin ; eyes sparsely clothed with minute pale hairs, just visible 

 under a hand-lens magnifying 15 diameters (nominal) when the eyes are brightly 

 illuminated and viewed against a dark background : palpi cream-coloured, 

 proximal joint clothed with long, whitish hair, distal joint viewed from side 

 shortly acuminate (swollen or strongly swollen at base and tapering quickly to a 

 point), clothed on outer side with minute, appressed, silvery white hairs mixed 

 with minute black hairs, and at base below with longer whitish hair ; antennae 

 agreeing generally in coloration with those of (^ , but expanded portion of third 

 joint usually broader (sometimes much broader and dark brown or brownish 

 above), and annulate portion of same joint stouter. Thorax : ground colour, 

 pleurae, and pectus as in c?, except that ground colour of distal extremity of 

 scutellum is chestnut or cinnamon-rufous ;t dorsum greyer than in cj", longitudi- 

 nally striped with light grey as shown in fig. 2, the paired, admedian, grey 

 stripes usually broader than in (^ ; hairy covering of dorsum consisting of short, 

 appressed, ochre-yellow or pale ochre-yellow hairs, mixed with longer and more 

 erect blackish hairs, and with short black hairs on (at least posterior extremities 

 of) admedian dark stripes, and on median portion of basal half of scutellum. 

 Abdomen (cf. fig. 2) : grey stripes on dorsum clothed with minute, appressed, 

 cream-coloured or pale yellow hairs, dark markings clothed with black hairs of a 

 similar character ; on the penultimate and antepenultimate segments (frequently 

 also on others as well) the pale yellow hairs on the grey markings are freely 

 interspersed with longer black hairs ; dorsal surface of last segment almost 

 exclusively if not entirely clothed with black hair ; sides of dorsum fringed 

 with whitish hair, which hov/ever is not so long as in (5 ; ventral surface of first 



* It is this median portion which is shown in the figure on p. 286, where it appears somewhat 

 too dark ; it must not be mistaken for the frontal callus. 



t A trace of chestnut in the ground colour is often seen at the tip of the $ scutellum 

 also. 



