African P/ihbolonuc Dijjtera. 3G7 



yellow bail's; dorsum marked witli tiiree uarrow, drab-grey 

 or smoke-grey, longitudinal stripes, which in rubbed speci- 

 mens are more or less indistinct except in front of the trans- 

 verse suture, the median stripe in s()nie cases very slender 

 and much narrower than the paired stripes, the latter (some- 

 times also the median stripe) expanded on the front margin ; 

 continuation of each paired stripe marked by a spot behind 

 transverse suture] the usual creseentic marks in front of 

 presutnral groove difficult to distinguish in rubbed specimens ; , 

 lileunc, pectus, and a longitudinal stripe on each side of 

 dorsum behind transverse suture grey, plcurie clothed |)artly 

 wiiii whitish or greyisli, partly witli dark brownish hair. 

 Alnloinen : dorsum clothed with minute, appressed, pale 

 yellowish or pale ochre-yellow hairs, second and following 

 segments each with a pair of rounded spots, as described in 

 diagnosis, spots on second and third segments not in contact 

 with front or hind margins, tliose on following segments in 

 contact with front margin in each case, spots on seventh 

 segment much smaller than remainder, which are usually rela- 

 tively large, lateral extremities of dorsal scutes of all segments 

 more or less grey, though the grey lateral extreuiitics are 

 palest and most distinct in the case of the first three seg- 

 ments, extreme hind margins of all segments narrowly 

 yellowish grey; venter smoke grey, with a broad, median, 

 clove-brown, longitudinal stripe ; hairy covering of venter 

 similar to that of dorsum. // iiujs drab or brownish drab, 

 distinctly marked with the usual three rosettes and other 

 pale markings, but with the /j/'S^ basal cell and also the first 

 posterior cell except Us distal extremity semi-hyaline and 

 usuaUi/ entirely devoid of markings, though the outlines of the 

 portions of the rosettes falling within these cells are some- 

 times faintly discernible ; first and second costal cells very 

 lightly tinged ^vith drab ; portion of marginal cell on 

 proximal side of stigma and anal cell as far as proximal 

 rosette semi-hyaline and devoid of markings; sinuous pale 

 mark at tip of wing cleaily defined, running from costa, 

 immediately beyond distal extremity of second longitudinal 

 vein, to posterior branch of third vein, broadening out at its 

 anterior extremity and sometimes sending out an oifshoot in 

 the shape of a streak running along the eosta towards the 

 stigma ; in some specimens the apical sinuous mark is con- 

 verted into an elongate loop by an additional mark beyond 

 it, more irregvdar and less sharply defined, connecting its 

 extremities; u})per portion of distal rosette clearly defined, 

 consisting of a single streak which is usually widely inter- 

 rupted on the second longitudinal vein, so that the upper 



