248 NEW YORK STATE MUSEUM 



at the tip of each side stripe; feelers brown; legs dingy yellow; 

 wings pale; veins and poisers pale yellow. Length of body 1.25 

 lines (=2.5 mm.); of wings 2.5 lines (=5 mm.). St Martin's 

 falls, Albany river, Hudson's bay. Walk'er, loc. cit. 



76. Chironomus confinis Walker 



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

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



Male. Pale yellowish green; chest with the usual three lines 

 dull red; the middle stripe divided; hind chest brown; abdomen 

 green, yellowish towards the base, darker at the tip; the sides 

 hairy; feelers brown; legs dull yellow, hairy; wings colorless, 

 hairy ; veins pale brown ; poisers white. 



Female, Chest yellow; middle stripe not divided; abdomen 

 dingy yellow. Length of the body one line (=2 mm.) ; of the 

 wings two lines (=4 mm.). St Martin's falls, Albany river, Hud- 

 son's bay. Walker, loc. cit. In the heading of the group Walker 

 says that the wings are bare. 



77. Chironomus pellucidus Walker 



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

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



Male, Body pale yellowish green; feelers pale brown; abdomen 

 and legs very hairy ; wings colorless, hairy, deeply fringed ; veins 

 dull yellow; poisers pale yellow. Length of the body f line 

 (=1.5 mm.) ; of the wings 1.5 line (=3 mm.). St Martin's falls 

 Albany river, Hudson's bay. Walker, loc cit. 



78. Chironomus trichomerus Walker 



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

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



Male. Wings hairy. Pale greenish yellow; sides of abdomen 

 fringed with hairs; eyes black; feelers and legs^yellow, the latter 

 thickly clothed with short hairs; wings whitish, deeply fringed; 

 poisers pale yellow. Length of the body one line (=2 mm.) ; of 

 the wings two lines (=4 mm.). ;St Martin's falls, Albany river, 

 Hudson's bay. Walker, loc. cit. 



79. Chironomus sp. 

 (Pl.23, fig.13) 



In the figure mentioned above is shown the labium of a blood 

 worm found in Fall creek, Ithaca N. Y., in the quiet water. This 

 labium resembles that of Chironomus decorus, but the 

 teeth are considerably longer. 



