SCENOPIJfCS. 313 



<5 of 4th and 5th, and to a less degree of the 6th (or the 

 membrane between them) conspicuously pure white, this colour 

 not reaching the sides ;* pubescence practically imperceptible ; 

 venter shiningjblack, with chestnut-brown reflections and minute 

 black bristly pubescence; genitalia in tf large. In the $ the 

 white transverse bands absent ; and the 3rd to the 6th segments 

 with a transverse impressed line across the middle of each ; 

 ovipositor small, broad. Legs shining chestnut-brown ; coxae and 

 trochanters with blackish reflections ; femora occasionally, and 

 tibiae, especially the hind pair, often, with blackish markings ; 

 tarsi black, 1st joint more or less chestnut-brown, also first three 

 joints (except the tips) of hind pair; femora rather short and 

 thick, especially fore pair ; hind tibiae slightly curved ; pulvilli 

 small, brownish orange. Pubescence of legs weak and pale, 

 forming small fringes behind anterior femora, and a row of rather 

 long pale hairs behind basal half of hind tibiae ; spurs absent, but 

 generally a few bristly hairs that appear like spurs. Wings pale 



Fig. 22. Scenopinus fene sir alls, L., wing and antenna. 



brownish grey, veins darker brown; venation in accordance with 

 the generic diagnosis ; lower branch of 4th vein and anal vein not 

 quite attaining margin ; alar squamae small, blackish grey, grey- 

 fringed ; thoracic pair absent ; halteres varying from brown to 

 whitish, sometimes with darker marks. 



Length, 5-6 mm., the $ generally slightly the larger. 



Commonly distributed in Europe and N. America, and the 

 Western Himakyas (hills and plains) : Barogh, Simla Hills, 

 5000 ft., 10. v. 1910, on edge of small stream (Annandale) ; 

 Kasauli, 6300 ft,, 15. v. 1908 (Annandale) ; Nairn Tal, 3 & 7. vi. 

 1909; Naiui Tal Distr. (plains), 24 & 28. v. 1909. Also 

 recorded from Papua and Hawaii. 



The present description of fenestralis is an abbreviation of 

 Yen-all's, except for the antennae, as in the Indian specimens 

 these are normally lighter or darker brownish yellow, not blackish. 

 The legs are also more brownish, especially the femora and tibiae, 

 than in European specimens, these being the only differences. 



* In one Indian specimen the white extends over the sides, but this is, 

 no doubt, exceptional. 



