in the British Museum. 9 



cell 1st M. 2 closed, basal deflection of Cu^ just beyond the 

 fork of M ; abdominal segments yellowish, the basal tergites 

 dark brown. 



Male. — Length about 9 - 5 mm. ; wing 11*5 mm.; hind leg, 

 femur 10 mm., tibia 92 mm. 



Rostrum slightly elongate, dark brownish black ; palpi 

 black. Antenna? dark brown throughout ; first scapal 

 segment elongated ; basal flagellar segments enlarged, sub- 

 globular, the distal segments cylindrical, the verticils shorter 

 than the segments that bear them ; terminal flagellar 

 segment nearly twice as long as the penultimate, deeply 

 constricted at mid-length to appear as two. Head dark 

 brown ; vertex between the eyes very narrow, so that the 

 eyes are almost contiguous. 



Pronotum obscure yellowish. Mesonotal prsescutum 

 obscure greenish yellow with a broad, brownish-black, 

 median stripe that broadens out behind ; scutal lobes 

 largely blackish brown ; scutellum and postnotum similar, 

 sparsely grey-pruinose, the sides at the base paler. Pleura 

 obscure yellow with a narrow, dark brown, longitudinal 

 stripe extending from the propleura, passing above the fore 

 coxae and base of the halteres to the postnotum; meso- 

 sternum similarly dark brown. Halteres with the knobs 

 and bases of the stem yellowish, the remainder of the stem 

 pale brown. Legs with the coxae yellow, the posterior coxa? 

 darker; trochanters dull yellow ; femora rather long and 

 slender, light brown, the tips narrowly (l-l'l mm.) dark 

 brownish black; a dull yellowish subapical ring ; tibiae and 

 tarsi dark brown ; claws with four basal teeth. Wings with 

 a pale greyish-yellow tinge, costal and subcostal cells more 

 yellowish ; membrane with a few brown spots and seams, 

 and numerous pale brownish-grey dots in the cells; the 

 larger brown markings are as follows : At h ; at the origin 

 of Rs, continued along the vein to beyond a third its length; 

 tip of Sci ; at the tip of R x and along r ; as seams along the 

 cord and outer end of 1st M 2 ; the small pale dots are well 

 scattered over all the cells ; there is a small yellowish area 

 near the end of cell 1st R x , immediately before r, giving a 

 somewhat ocellate appearance to the stigma. Venation r 

 Sc long, ending but a short distance before the fork of Rs, 

 Sc 2 at the tip of S^ and subequal to it ; Rs long, gently 

 arcuated ; r at the tip of R l ; R 2+3 rather arcuated at 

 origin, thence running pai'allel to R i+5 ; basal deflection 

 of R i+ & about one-half longer than r-m ; cell 1st M 2 closed, 

 long-pentagonal, m being about two-fifths the length of the 



