MAY FLIES AND MIDGES OF NEW YORK 247 



lowish brown; feelers brown; legs yellowish brown; thighs 

 3^ellow at the base; wings colorless; veins and poisers yellow. 

 Length of the body 1.75 lines (3-J mm.) ; of the wings 3.5 lines 

 (=7 mm.). St Martin's falls, Albany river, Hudson's bay. 

 Walker, loc. eit. ; New Jersey (Johnson). 



72. Chironomus lasiopus Walker 



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

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



Female. Wings hairy. Head and chest yellow; the usual three 

 stripes on the latter brown, confluent, and occupying the whole 

 of the back; feelers brown; scutcheon dingy yellow; hind chest 

 black; abdomen brown, with a broad, dingy j^ellow band on the 

 hind border of each segment; legs clothed with short yellow 

 hairs; thighs yellow; shanks darker; feet brown; wings colorless, 

 with the usual spot on the disk ; veins brown, poisers pale yellow. 

 Length of body, 2.5 lines (^5 mm.) ; of the wings, 4 lines (=8 

 mm.). St Martin's falls, Albany river, Hudson's bay. Walker, 

 loc. cit. 



73. Chironomus hilaris Walker 

 1848 Chironomus Walker. List Dipt Brit. Mus. 1 : 17 



Male. Wings bare. Body straw-color; head and chest tawny, 

 the latter produced in front, and having its usual three 

 stripes of a yellow color; feelers tawny; eyes black; legs brown; 

 thighs white towards the base; middle shanks pale yellow, ex- 

 cepting the base and the tips; wings white, each having a broad, 

 irregular, brown band across its disk; veins yellow; poisers pale 

 yellow. Length of the body 1.5 lines (^3 mm.) ; of the wings 3 

 lines (=6 mm.). Habitat unknown. Walker, loc. cit. 



74. Chironomus anticus Walker 

 1848 Chironomus Walker. List Dipt. Brit. Mus. 1 : 21 

 1878 Chironomus Ost. Sack. Cat'l. Dipt. N. A. p.20 



Wings hairy. Chest a little produced in front, silky white, 

 with the usual three stripes of bright tawny color; abdomen pale 

 yellow, hairy; last two segments dull tawny; legs pale yellow, 

 hairy; a tawny band round each hind thigh; tips of the thighs, 

 of the shanks, and of the joints of the feet, tawny; wings whitish 

 from the base to the middle, pale tawny thence to the tips, 

 slightly fringed; poisers pale yellow. Length of body 2.5 lines 

 (:=:5 mm.) ; of wings 4 lines (^8 mm.) . Georgia. Walker, loc. cit. 



75. Chironomus bimacula Walker 

 1848 Chironomus Walker. List Dipt. Brit. Mus. 1 : 15 

 1878 Chironomus Ost. Sack. Cat'l. Dipt. N. A. p.20 



Female. Wings bare; body citron color; chest produced in 

 front, with the usual three stripes of orange color; a black dot 



