»iOO tiii;i(kviu.t:. 



blackish at tip, inicroscopically pubescent, witli muiierous rather 

 .short spines ; tarsi darker. Wiiujs nearly clear, veins brownish 

 yellow; tegiiloe dirty wliite ; lialteres brown and j^ellow. 



Described from a d in the Indian Museum from Shillong. 



A second specimen, also from tShillong, 4900 ft., 10-12. x. 1914 

 {Kemp), is identical, except that the abdominal segments have no 

 pale sides, as in the type, but the hind borders of the 2nd segment 

 and onwards are very narrowly yellowish towards each side, and 

 bear thereon some rather long yellowish hairs. 



23G. Thereva bilineata, Bmn. 



Tliereva hih'iit'afu, JJiuiietti, Hec. lud. Mus. xiii, p. 78 (1'J17). 



2 • Head with frons at vertex distinctly more than one-third 

 widtli of head, at level of antennoe over halt: the head ; its upi)er 

 two-ihirds yellowish brown, the rest (with face) ash-grey ; whole 

 frons -with scattered black hairs of moderate length ; face wholly 

 covered with long pendent whitish-grey hairs, extending over 

 cheeks and lower part of occiput ; some black hairs below or around 

 mouth ; proboscis reddish broMMi ; antennae black, first two joints 

 withstrong black bristles, 3rd as long as 1st ; vertical triangle barely 

 I'aised ; a row of rather strong bristles along upper occipital margin, 

 a second row a short distance behind the first. Thorax dark 

 brown, nearly black, \\\{\\ two distinct, yellowish-white, well- 

 separated dorsal stripes from anterior to hind margin and minute 

 sparse yellowish pubescence. A row of live powerful spines 

 behind humerus, (extending towards wing-base; two supra-alar 

 (postsutural), one post-alar, a large and lesser one on each side 

 margin of seutellum and a pair of apical scutellar decussate nearlv 

 perpendicular ones. Pleuras ash-grey, with long whitish-grey 

 pubescence. Seutellum ash-grey, with a large brown s])ot at base ; 

 hind margin with soft yellow hairs as well as the bristles. Abdomen 

 black; IsL segment grey, with yellow pubescence on hind margin 

 and whitish hairs at sides ; rest of segments with distinct ash-grey 

 hind borders, which ai-e narrowest in middle, bearing some yellow 

 or yellowish-white ])ubescence; sides of 2nd and 3rd segments 

 with whitish hairs; rest of dorsum and at sides with short black 

 pubescence; 7th segment shining chestnut-brown; genitalia the 

 same, marked with yellow, fairlv prominent; venter black, all 

 segments except 1st with well-deliued bare hind margins. Leijs: 

 femora black, with depressed white pubescence and a short row of 

 bristles in middle of underside ; tibia? brownish yellow, darker at 

 tips; fore tibia? with three (inner pair wanting), posterior pairs 

 with four rows of strong spines; tarsi brownish, yellow or dark 

 brown, joints paler at base, shortly pubescent. Woujs pale gre)^ 

 normal ; halteres black. 



Lengtli, 114 mm. 



Described from a unique 5 in the Indian Museum from Theog, 

 Simla Distr., 8000 ft., l.v. 1907 {Annandale). 



This species bears some resemblance to my jlavoJlneata. 



