ERISTALIS. 18 L 



close together, probably sometimes uiiitecl ; dorsum witli brownish- 

 yellow pubescence; scutelliiin shining blue-black with dark brou n 

 pubescence. Sides of thorax leneous with a little yellowish-grey 

 tomentuin below humeri and some pale pubescence here and then-. 

 Abdomen : 1st segment yellowish, more or less aeneous in middle ; 

 2nd, 3rd and -Ith orange; 2nd with bind margin and median 

 stripe both narrow and shining black ; 3rd and 4th with narrower 

 black hind margin and traces of median stripe as on 3rd; 5th 

 entirely shining black. Pubescence of abdomen i)ale yellow, but 

 black on the black parts of 2nd segment and also towards the 

 yellow sides of the segment. A^enter pale yellow with conculoroiis 

 pubescence. Legs black; anterior femora broadly, hind pair \ery 

 narrowly at tips, orange; bisal half of fore tibia^ nearly all the 

 middle pair, and base of hind tibite narrowly, orange; tarsi with 

 1st and 2nd joints and base of 3rd, orange. Pubescence of legs 

 following ground-colour, but some brownish-yellow pubescenc- on 

 hind femora. Wings nearly clear, a slight brownish tinge on 

 anterior part and two minute brown s])()ts in stigiuatic region as 

 in son)e other species ; halteres orange. 



Length, 5-G mm. 



Described from the fgpe d in the Indian Museum, from 

 Calcutta (undated). An unsatisfactory species, of which the limits 

 are by no means clear. The nuiterial consists of a c? {t>/pe) in the 

 Indian Museum so named (but not described) by Bigot, and two 

 further S 6 ii» very bad condition in Bigot's own collection, 

 which, judging from the Indian Miiseuu) registered numbers that 

 they bear, evidently form part of the same series. They are 

 all' labelled simply " Calcutta." Of tl-.ese latter two d 6, one 

 is an exact countei-part of the type, but the other does not appear 

 to be conspeciiic. A 5 from Katihar, Purneah District, 15. vi. 

 1907 (/'rtiffO, may belong to this species. It has the frons and 

 face gradually widening, at level of antennae nearly fr width of 

 head; frons shining black, with brownish-yellow liaiis ; the 

 abdominal l)lack bands and dorsal stripe are broader, tlie front 

 part of the mesopleura and upper part of the sternopleura are 

 grey-dusted. A $ :n the British ^lusenm from Dawnat Eange, 

 Teiiasserim, 500-1500 ft., v-vi, 18i)l (Bingham), may be con- 

 speciiic, but is much larger (10 mu).). 



lie. Eristalis arvorum, Fahr. { V\. IV, figs. 6, 7.) 



.Si/rpJtUfi arniinnn, l''!il)riciiis, Maiit. Ins. p. 3.35 (17S7). 

 Eridalis arvorum, de Meijinv. 'I'ijd. v. l]nt. 11, p. 1247 (illOS). 

 Erisfalis fiilvipcK, Macfjiiart, Dipt. Ivxot., 8iippl. i.]). ll'S (1840). 

 Ju-isfa/is^ aiitidotw, Walker, List Dipt. I'.rit. Mus. iii, p. ("JG 



(1840). 

 Eristalis (inticetm, Walker, List Dipt. Urit. Miis. ni. p. Ol'4 (184!)). 

 Si/rj)/ins i/aadri/ini'fitan, iMibriciiis, op. cit, p. .■{•'!(> (1787). ^ 

 ^Ii/sca traii<iii(hnric:t, (liiiclin, Syst. Nat. v, p. 2870 (1790).'^ 



S $. Iledd : f? , eyes closely contiguous for much more than 

 half the distance from extreme vertex to anterior edge of the 



