56 JOHN D. TOTHILL. 



sternopleuial bristles and three post-suturals. Abdomen grey pollinose on a black 

 ground ; discal as well as median marginal bristles on segments 2, 3 and 4. Length, 

 8 mm. 



Head (fig. 11) at vibrissae almost as wide as at base of antennae. Vibrissae on 

 a level with oral margin ; palpi well developed, yellow. Eyes bare ; cheeks (genae) 

 white pollinose, two large black macrochaetae in the middle, a few black hairs along 

 oral margin in a row terminating with the vibrissae. Distance from oral margin 

 to base of eye almost half as great as eye height. Sides of face whitish pollinose 

 below, becoming golden pollinose above, bearing a row of four stout macrochaetae ; 

 width at narrowest point equal to almost half the distance between the vibrissae. 

 Facial ridges bare, with no bristles whatever above the vibrissae. Facial depression 

 white pollinose, with no median carina. Antennae fully as long as face ; first 

 two segments reddish, third segment black, varying to somewhat reddish at base ; 

 length of third segment about twice that of second. Arista black, thickened on 

 basal three-fourths ; first two segments of equal length and together as long as 

 third segment. Front at narrowest part one and one-half times as wide as either 

 eye ; sides of front bright golden pollinose, blending at lower end to white, frontal 

 vitta about colour of eyes and opaque, at narrowest point narrower than either 

 side of front. Orbital bristles present ; ocellar bristles present, directed forward. 



Fig. 12. Wing of Chaetoplagia asiatica, sp. n. 



Thorax golden pollinose on black base, sub-shining. Three sternopleural bristles 

 and three post-suturals. Scutellum with two pairs of marginal macrochaetae and 

 a weak cruciate apical pair. Legs black, unusually bristly. Wings (fig. 12) hyaline, 

 cell R. 5 terminating far before tip of wing. R. 1 (first vein) bristly for entire length ; 

 R. 2 +3 destitute of bristles ; R. 4 +5 bearing bristles for almost entire length ; bend 

 of M. 1+2 (fourth vein) bearing a long appendage. Tegulae white. 



Abdomen black, blue-grey pollinose on basal three-fourths of segments 2, 3 and 

 4 ; same segments bearing a pair of discal, as well as a pair of median, marginal 

 macrochaetae. 



Described from two specimens, apparently females, collected in Kumaon by Dr. 

 A. D. Imms, who gives the following field data. 



Khati, Kumaon: 30. v. 09, 7,650 ft. 



Bhowali, Kumaon: 20.vi.12. 



This beautiful little fly is clearly congeneric with Coquillet's Nearctic C. atripennis, 

 rather than with any Palearctic species known up to the present time. It seems 

 to have the distinction of being the first species of the Plagia group to be described 

 from any f»art of Asia. 



