MAY FLIES AND MIDGES OF NEW YORK 299 



2. Eurycnemus (?) unicolor Walker 



1818 C h i r o n o m u s Walk. List Dipt. Brit. Mus. 1 : 19 

 1878 C h i r o n o m u s Ost. Sack. Cat'l. Dipt. N. A. p.21 



Female. Body hairy, saffron or pale orange color; feelers yel- 

 low; eyes black; legs pale yellow, very hairy; wings colorless, 

 hairy, fringed; veins yellow; poisers pale yellow. Length of body 

 5.5 mm.; of wings, 9 mm. Nova Scotia. Allied to a e s t i v n s. 



3. Eurycnemus ( ?) lasiomerus Walker 



1848 C b i r o n o m u s Walk. List Dipt Brit. Mus. 1-: 19 

 1878 C h i r o n o in u s Ost. Sack. Cat'l. Dipt. N. A. p.21 



Male. Wings hairy. Head orange; feelers very downy; their 

 hairs yellow; chest green; the usual three stripes orange colored; 

 abdomen yellow, thickly fringed with hairs along each side; legs 

 yellow, hairy, especially the feet and the tips of the shanks of 

 the fore legs; wings white; veins pale yellow; poisers yellowish 

 white. Length of body 9 mm.; of wings 12 mm. Ht- Martin's falls, 

 Albany river, Hudson's bay. 



This species has the chest produced in front like C . a e s t i - 

 vus Curtis (=C . hirtipes Macq.) to which it is nearly 

 allied. Walker, loc. cit. C. aestivus, mentioned above, is 

 a synonym of elegans Meig., the type species of the genus 

 Eurycnemus. 



Genus 44. Metriocnemus Van der Wulp 

 Tijd. v. Entom. XVI (LXX) and XVII, 136 



Imago. Antennae of the male fourteen- jointed, long and densely 

 plumose; antennae of the female seven-jointed, with a few sub- 

 erect hairs; in both sexes the first joint is thick, disk-like. Pro- 

 boscis short, palpi bent, four-jointed. Eyes emarginate, ocelli 

 wanting. Thorax highly arched, more or less produced over the 

 head, sternum strongly arched. Abdomen as in C h i r o n o m u s ; 

 in the male the anal is distinctly separated from the preceding 

 segments, and is provided with a pair of filiform or sometimes 

 widened claspers (pl.33, figs. 6, 8). Legs slender, the hind legs 

 hairy, fore metatarsus shorter than its tibia. Wings hairy, par- 

 ticularly toward the tip; anal angle prominent; the vein R 4 j. 3 

 straight and running parallel with the distal end of R t and ending 

 a short distance before the tip of the costa ; the crossvein is at or 

 even a little proximad of the mid length of the wing; the media is 

 simple; the fork of the cubitus is directly under or even a little 



