MAY FLIES AND MIDGES OF NEW YORK 299 



2. Eurycnemus (?) unicolor Walker 



1848 Chironomus Walk. List Dipt Brit. Mus. 1 : 19 

 1878 Chironomus 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 aestivus. 



3. Eurycnemus ( ?) lasiomerus Walker 



1848 Chironomus Walk. List Dipt Brit. Mus. 1:19 

 1878 Chironomus 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. St Martin's falls, 

 Albany river, Hudson's bay. 



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

 v u s Curtis (=C . hirtipes Macq.) to which it is nearly 

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

 a synonym of e 1 e g a n s 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- join ted. Eyes emarginate, ocelli 

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

 head, sternum strongly arched. Abdomen as in Chironomus; 

 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 _f 5 

 straight and running parallel with the distal end of Rj 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 



