MAY FLIES AND MIDGES OF NEW YORK 



299 



2. Eurycnemus (?) unicolor Walker 

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

 1878 Oliironomus Ost. Sack. Cafl. Dipt. N. A. p.21 



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

 low; eyes black; legs pale yellow, very hairy; ^ings colorless 

 hairv fringed; veins vellow; poisers pale yellow. Length of body 

 5.5 mm.; of wings, 9 mm. Nova Scotia. Allied to aestivns. 



3. Eurycnemus ( ?) lasiomerus Walker 



1848 C h i r o n m u s 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; l^s 

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

 the fore legs; wings white; veins pale yellow; \^^' ^f^J^ 

 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 1 1 - 

 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- 

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

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

 yvanting. 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^-f., 

 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 

 .€ven a little .proximad of the mid length of the wing; the media is 

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



