70 STRPHID^. 



two similar spots but rather smaller ; these in the type are of 

 uniform width, but in the second specimen are distinctly wider 

 towards the sides as in the previous segment. Pubescence of 

 abdomen concolorous with ground-colour ; a quantity of pale 

 yellow or whitish- yellow hair laterally at base. Venter blackish, 

 with greyish reflections, yellowish about tho middle. Legs : coxse 

 and basal half of femora black ; tarsi brown ; remainder of legs 

 yellowish or brownish-yellow; a little whitish and pale yellowish 

 hair on femora, longer on under side. Wings colourless ; 

 stigma dirty brownish-yellow; halteres dull red-brown. 



Length, 10 mm. 



Described from two S 6 '■> the type taken between Kalek and 

 Misshing (4000 ft.), 18. iii. 1 912 ; the second exam])le taken at 

 Yeinbung (llOO ft.), 17. iii. 1912 (Abor Expedition). Type in 

 Indian Museum. 



59. Syrphus torvus, Ost.-Sack. 



Syrphus torvus, Osten-Sacken, Proc. Bostou Soc. Nat. llist. xviii, 



p. 139 (1875). 

 Scceva ribesii, Fallen, Dipt. Suec, Syrpb. 40, 6 var. (1817). 

 Scceva topiarius, Zetterstedt {nee Meigeii), Ins. Lapp., Dipt. p. 599 



(1838); id., Dipt. Scnnd. ii, p. 723 (1843). 

 Syrphus topiarius, Schiner, Faun. Austr. i, p. 304 (1862). 

 Syrjihus torvus, Verrall, Brit. Flies, viii, p 356 (1901). 



S $ . Head : 6 , eyes contiguous for a distance equal to length 

 of vertical triangle, with grey pubescence : vertical triangle black 

 with long black hairs ; frons with yellow dusr and long black 

 pubescence : above antennae, shining black with an orange margin ; 

 face wholly covered with yellow dust which is more orange on 

 cheeks, all covered with fine black pubescence ; antennae black, 

 under side of 3rd joint dull reddish-brown ; occiput dusted with 

 yellowish-grey, marginal fringe bright yellow, some black hairs 

 intermixed behind vertex. In $ , frons at level of antennae more 

 than one-third of head; a considerable space at vertex and a 

 similar space above antennae, brown ; rest of frons yellow-dusted 

 as in S ■ Thorax dull greenish-grey; pleurae dark grey; scutellum 

 brownish-yellow ; pubescence on dorsum of thorax brownish- 

 yellow, brighter yellow round wing-bases, pale yellow on pleurae 

 and wholly black on scutellum. Abdomen black ; 2nd segment with 

 a pair of oval yellow spots, well separated, across middle, narrowly 

 overlapping side margins near anterior cornel's ; 3rd and 4tli 

 segments each with a yellow band placed just clear of anterior 

 margin, though its centre might actually touch it for a space ; it 

 is a little emarginate behind in middle, and each end clear of the 

 side margins, except at anterior corners, where it passes over 

 the edge. Hind margins of 4th and 5th segments orange. 

 Genitalia orange and black. Pubescence mainly following ground- 

 colour, but entirely pale yellow on 2nd segment except on hind 

 niargin ; that on the cross-bands brownish. Venter, basal half 



