G. rUSCA: THORAX, ABDOMEN, LEGS, WINGS. 71 



buff, terminal joint stout, dark brown at base beneath, branched 

 hairs seventeen to twenty in number ; palpi buff, mouse-grey on 

 upper portion of outer surface, and dark brown at tips ; prohoscis 

 bulb buff-yellow or orange-buff, often with a dark brown blotch 

 on its upper lateral margin on each side. 



Thorax. — Dorsum mouse-grey, with dark brown markings of 

 the usual type, as shown in Plate VIII ; pleurae and pectus drab- 

 grey or isabella-coloured pollinose, sternopleurae with a black or 

 clove-brown blotch (covered and partially obscured by yellowish 

 pollen) on each side of median ventral line, between front and 

 middle coxae ; upper surface of scutellum dark brown, impressed 

 median line and under surface buff, apical scutellar bristles of 9 

 long or fairly long. 



Abdomen. — Dorsum of first and second segments light mummy- 

 brown or dull cinnamon, dorsum of remaining segments dark 

 brown ; basal angles, lateral margins, and hind border of second 

 segment usually infuscated ; third and fourth segments often 

 with a paler area (of same colour as median portion of second 

 segment) in centre, though their hind borders are still dark 

 brown ; posterior angles and lateral margins of third to sixth 

 segments inclusive yellowish-grey pollinose ; seventh segment 

 yellowish-grey or brownish-grey pollinose ; hypopygium of ^ (rf. 

 Fig. 17, A, p. 76) isabella-coloured, greyish-buff, or greyish fawn- 

 coloured. 



Legs buff or ochraceous-buff, front femora usually with a 

 more or less well-marked inouse-grey or greyish-brown streak on 

 inner side, middle and hind femora often with a similar streak 

 on outer side of their distal halves, and frequently also with the 

 usual dark brown or mummy-brown elongate blotch on their 

 under side near distal extremity ; hind tibiae usually with a 

 more or less distinct dark brown or brown partial ring round 

 middle, and middle tibiae generally with a vestige of a corre- 

 sponding ring ; tips of hind tibiae on outer side and upper side 

 of first three joints of hind tarsi mummy-brown ; short, felt-like 

 hair clothing tips of hind tibiae on inner side, and also clothing 

 under side of first three joints of hind tarsi, shining tawny 

 ochraceous ; tips of last two joints of front and middle tarsi dark 

 brown, last two joints of hind tarsi entirely clove-brown. 



Wings dull sepia-coloured, fairly dark ; alula paler (almost 

 hyaline) ; bent-up portion of fourth longitudinal vein, except at 

 each end, paler ; anterior transverse vein, although thicker at 

 its extremity in contact with the third longitudinal vein, not so 



