EllISTALIS. 179 



concolorous with grouiul-colour, l)iit wliolly brownish-yellow along 

 sides. A^enter dark grey or blackish, with pale, rather sjjarse 

 pubescence. Leys black ; extreme tips of anterior femora, about 

 basal half of anterior tibiae and the anterior tarsi more or less at 

 the base, brownish-yellow. Pubescence of legs mainly yellow, but 

 black, dense and shorter on front and upper sides of anterior 

 femora, and some rather dense black pubescence is present on 

 lower sides of hind femora; tibifc with more or less black hairs 

 intermixed, and a fringe of rather coarse black liairs on inner 

 side of b.isal half; apparently the black hairs are more nume- 

 rous in 6 than $ . Winijs pale yellowish-grey ; just a suspicion 

 of brownish-yellow suifusion in middle of anterior part of wing; 

 stigma reduced to a minute spot; halteres yellowish-bi'owu. 



Length, 12 mm. 



Described from some 6 6 and $ 5 in the Pusa collection from 

 Ootacamund, ToOO ft., 24-31. xii. 1913 {Fletcher). Type c? and $ 

 sent to British Museum. 



E. amjustlmcmjinalls and E. simulatwi closely resemble each 

 other. The differences are as follows. In the former, the 

 epistonie is obtuse, not projecting beyond the antennal prominence 

 in profile and produced downwards only to a distance of half the 

 height of the eyes ; the hind femora are straight and in no way 

 thicker than the othei's ; and the hind tibia? are only gently 

 curved. In shnidatus the epistome is cons])icuouslv conical, pro- 

 jecting diagonally much beyond the antennal prominence in profile, 

 and is distinctly longer proportionately than m amjustimarf/inalia ; 

 the hind femora are considerally incrassated and curved, though 

 less so in the $ ; and the liind tibite are rather abruptly bent in 

 the middle, rather less so in the $ . E. simiihiiiis is also rather 

 smaller than its allied congener. 



144. Eristalis arbustorum, L. 



Musca arhustorum, Linnaeus, Syst. Nat. VA. 10, p. 591 (17o8). 



P Mmca parnlleli, Harris, I<]xpi)S. Engl. Ins. p. 58, pi. xv, tig. 10 



? Mtisca lineiihe, id., op. cit. p. 4.'', pi. x (17H2). 



J $. Head: d , frons and face with yellowish-grev dust ; vertex 

 blackish with black pubescence and a little yellow pubescence on 

 hinder part ; frons with deeper yellow, and face with pale yellow , 

 ])ubescence ; region of moutli-border free of pubescence but not of 

 yellowish-grey dust. 'i'he small antennal prominence shining 

 black, orange-brown in front. Antenna? black, arista orange, 

 plumose on basal half. Only a vestige of a median facial line; 

 lower part of head shining brown, bare; occiput ])ale grey, 

 silvery-white on side margins; upper ])art with yellow pubes- 

 cence, low^er with whitish. In $ , pubescence on frons and 

 face longer than in c? , whiMsh-yellow, except for some 

 black iiiibescence near vertex. Thorax dull blackish, some- 

 times iiulistinetly .'-triped, covered with dense brownish-vellow 



n2 



