MAY FLIES AND MIDGES OF NEW YORK 299 



2. Eurycnemus (?) unicolor Walker 



1848 C b i r o 11 o in 11 s Walk. List Dipt Brit. Mus. 1 : 19 

 1878 Ohironomus' Ost. Sacli. Cat'l. Dipt. N. A. p.21 



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

 low; e^'es 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 aestivns. 



3. Eurycnemus ( ?) lasiomerus Walker 



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

 1878 Ohironomus Ost. Sack. Cat'l. Dipt. N. A. p.21 



Male. Wings hairy. Head orange; feelers veiw dowm^; their 

 hairs j^ellow ; chest green ; the nsnal three stripes orange colored ; 

 abdomen yellow, thickh^ 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 Avings 12 mm. St Martin's falls, 

 Al^bany 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 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. Ej^es emarginate, ocelli 

 wanting. Thorax liiglil}^ arched, more or less produced over the 

 head, sternum strongly arclied. Abdomen as in Ohironomus; 

 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 

 Iiair}^, fore metatarsus shorter than its tibia. Wings hair}', par- 

 ticularly toward the tip; anal angle prominent; the vein R4-1.5 

 straight and running parallel with the distal end of R^ 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 Aving; the media is 

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



