' MAY FLIKS AMI MllHiKS OF XICW YORK 153 



the usual stripes, sometimes whitish; scuttellum pale. Legs and 

 halteres whitish; wings thickly pilose, subcinereous, I lie costal 

 margin somewhat yellowish, the basal cells short. Translation, 

 i Loew.) District of Columbia. 



Through the kindness of Mr S. Henshaw of Cambridge, Mass., 

 who examined (lie type for me, I may add that the fork of the 

 cubiius begins before the M-Cu. crossYein; the basal cells are 

 short, one third or less than the wing in length, and the abdomen 



is brownish. 



21. Ablabesmyia tibialis Staeger 



1845 T a n y p u s Staeger. Groeiil. Antl. Nat. Tids. 2 deii. R. B. I. 354 



Blackish; halteres and legs pale fuscous, hind tibiae of the male 

 long pilose; wings grayish, hairy. Length 2.5 mm. 



Male. The blackish body is without markings; thorax dark; 

 abdomen is somewhat shining and fuscous haired. The legs are 

 sordidly yellowish brown, sparsely haired; the tibiae, particularly 

 the hind pair, are long-haired. The wings are covered with gray 

 hairs; the vein R t runs parallel with the wing margin and ends 

 one third the wing length from the tip, K 4+ - ends near the tip, 

 the oblique R-M crossveiu being near the middle of the wing; the 

 media is slender and ends at the wing tip ; the fork of the cubitus 

 lies directly under the R-M crossvein; the M-Cu. crossveiu is 

 vertical (its position is not stated by Staeger) ; the branches of 

 the radius are stout, but the cubitus and the anal veins are nearly 

 invisible. 



Lundbeck (1898) p.l'!)4 describes the female as follows: 

 Female. Resembles the male, but the abdomen is shorter and 

 stouter; the wings are wider and the veins are a little stouter; 

 with long pile on the hind tibiae, though not so long as that of 

 the male; in other respects like the male. 



Greenland (Staeger and Lund'beck). 



22. Ablabesmyia fastuosa u. sp. 



(P1.19, figs. 16-19) 



A single larva from Eddy pond, Ithaca, X. V., in April. 



Larva. Reddish, length about 7 mm. Head brown, rather 

 short; about H times as long as wide; antennae more than twice 

 as long as the mandible. The basal joint about (wo thirds of 

 total length (fig.17). Mandible resembles that of mouilis, 

 but with a broader lateral tooth ilig.HJi. Maxilla prominent with 

 long palpus, hypopharynx and labium like that of monilis; 

 the latter, however, has teeth in the middle shorter than the 

 lateral ones, while the former has the teeth nearly equal in length. 



