VOLUCELLA. 147 



gradiKill}- lengtlieiiing on underside. Iliorax brovvnish-oraiioe ; a 

 fairly obvious, pale yellowish, median sfripe from anterior margin, 

 reaching (seen from behind) about to middle of dorsum ; humeri, 

 more yellowish. Hinder part of dorsum and under side of tliorax 

 darker brown, the colour softly blended with that of the paler 

 dorsum. Pubescence of dorsum and pleurae bright golden-yellow on 

 the orange parts and blackish-brown on the brown parts. Some 

 stiff l)lack hairs and moderately long black bristles on hinder half 

 of side mai'gins of dorsum. Scuteilum orange, with golden-yellow 

 pubescence with some black hairs intermixed on hinder |.art, and 

 a row of about twelve long black bristles on hind margin. 

 Abdomen bluntly conical, as long as thorax ; brigiit orange with a 

 slight brown tinge ; 1st segment and base of 2nd narrowly livid 

 grey ; rest of 2nd segment soft dull blackish-brown ; 3rd segment 

 with a large triangnhir spot in centre, the apex barely touching 

 anterior margin ; the other angles drawn out to sides of segment, 

 which they attain ; base of triangle quite clear of hind margin; 

 4th segment a little tinged with brown towards tip. Genitalia 

 orange. Whole pubescence of abdomen microscopic, dense, orange, 

 except on the livid base and anterior corners, where it is grevisli 

 and rather longer. Venter blackisii ; hind margins of 2ud, 3rd 

 and 4th segments narrowly pale yellow, well-defined. Leqs 

 orange, with short orange pubescence ; coxae and about basal half 

 of femora bhiek, with black pubescence; hind tibiieand tarsi more 

 yellowish, \\ itii dense pale yellow ])ubescence. Whif/a vellowish- 

 grey ; anterior part deeper yellow; stigma obvious, blackish, 

 elongate ; halteres pale yellow. 

 Lenrjth, 15 mm. 



Described from one S {type) in the Indian Museum, from above 

 Tura, Garo Hills, Assam, 3500-3900 ft., ix. 1917 {Mrs. Kemp) : a 

 second d in the British Museum from the Khasi Hills. A'cry 

 distinct from all other Indian species. 



117. Volucella trifasciata, ]Vied. 



Voiucella trlftisciutu, Wiedemann, Auss. Zweifi. ii, ]i. 1!)G (1830). 

 Volucella linearis, Walker, Ins. Saund. Dipt, i, p. liol ( 18o2). 

 Volucella (lecorata, id., Proc. Linn. 8oc. Loud, iv, p. ll'O (I86O1. 

 Volucella iiitbeculosa, ]Jif>ot, Auu. Sue. l*]nt I'lance, (5) v, p. -4 74 

 (1875); (G)iii, p. 77 (1883). 



(S $. //e«f^ yellow ish-orange to dull yellowish ; vertical triangle 

 in S extremely small, black, with some brown hairs and brow iiisli- 

 yellow ocelli ; frons in S small, somewhat projecting, dull yellow ish 

 with yellow pubescence. Antenna orange, arista orange with 

 black hairs. Face deeply cut away below antennjc, where it is 

 pale yellowish, rest dull yellowish with short bristly pubescence: 

 jnouth-border :ind proboscis orange-yellowish. Jn $, frons 

 barely wider above antenna; than at vertex', orange-yellow, very 

 smooth and shining, with short soft pale yellow pubescence, in 



l2 



