SYRITTA. 



2-15 



S. UiSering from orientalis only in tlie orange or 

 pale browui-^li basal one-third to two-thirds of 

 hind femora, tlie rest of which are black. Ab- 

 dominal spots on 2nd and Srd seg-meuts in J 

 often forming two unbroken bands ; when in 

 the form of spots, the dividing black line much [P- ^'^'^ 



narrower than in pipiens riijifacies, liig-, 



In the 5 9 of all the species the abdominal spots are always 

 more definitely separated than in the 6 6 • Dr. de Meijere ranks 

 riififacies as synonymous with orientalis, and I have seen more 

 than one intermediate specimen ; but if tliese two are considered a 

 single species, then it is probable that all the forms recorded from 

 theEast may be simply synonyms or varieties ol pipiens. /S". amhoi- 

 nensis may possibly be distinct through the alleged dark rings on 

 the anterior legs, but traces of such rings have been recorded in 

 specimens of both j^U^^*^^^^ ^'^^ orientalis. S. luteinervis, de Meij., 

 rests, as a species, wholly on the paleness of its venation. 



190. Syritta pipiens, L. (PI. Y, figs. 14, 15.) 



Musca pipiens, LinnfBus, Syst. Nat., Ed. x, p. 594 (1758). 



Syritta pipiens, auctt. ; Verrall, Brit. Flies, viii, p. 612, figs. 41b, 



417 ^1901). 

 Enmerus indicus, Wiedemann, Anal. Ent. t). 33 (1824). 

 Jiijlota indica, Wiedemann, Auss. Zweifl. ii, p. 103 (1830). 

 Xyluta 2)roxima, Say, Amer. Entom. i, p. 16, pi. viii, fig. 3 (1824). 



S $ . Head: vertical triangle elongate, blackish round the ocelli, 

 lower part yellow- dusted, the whole with pale hairs; frontal 

 triangle small, hardly produced, bare, dusted with yellowish- 

 white. Eves in S contiguous for a moderate space, front facets 

 larger than others ; frons in $ one-sixth width of head, linear 

 above, slightly widening below, vertex shining black, below this 

 a yellowish-white dust-spot, sometimes divided into tw^o, below 

 this again a bare shining black spot, thence dusted with yellowish- 

 white to antt-nnse, but the facial dust often white; a httle 

 whitish or pale vellowish pubescence near the eyes. Antennre 

 orange, sometimes brownish in $ , arista blackish, bare. Occiput 

 black, \\ith a narrow white tomentose margin; this latter dis- 

 appears in the neighl'ourliood of the vertex except for two 

 short spaces whicli stand out rather conspicuously as elongate 

 small white post-vertical spots. Thorax (\n\\ black; humeri and 

 sides of dorsum as far as suture, and pleura;, wholly yeUowish- or 

 whitish-grev ; traces of two short whitish stripes on anterior 

 margin of dorsum ; posterior calli greyish. Pubescence very short 

 aiursparse, adpressed, pale. Scutelluin flat on disc, slightly mar- 

 gined at the tip, which bears a few tiny, inconspicuous bristles. 

 Ahdomen dull black, Ist segment grey at sides; 2nd with a large 

 yellowish spot on each side ; these spots have their inner sides 

 C(mvex, and extend forward a little on tlie anterior corners, 

 where the segment itself is much produced, and where it has nt 

 its junction with the Ist segment a fan-shaped bunch ot 



