262 NEW YORK STATE MUSEUM 



lobes moderately produced, rounded, obtuse angled; the veins 

 toward the costal border are brown, the others thin and pale, 

 both branches of the radius curved; the costa does not extend 

 beyond the tip of the vein B 4 + 3 , the media run$ into the margin 

 of the wing a little beyond the tip, cubitus forks far distad of the 

 cross-vein, its anterior branch ends in the posterior margin of 

 the wing a little proximad of the end of R 4 + 3 , the posterior branch 

 is suddenly deflected. The middle and hind legs are sparsely 

 pilose, the fore pair is pubescent ; the metatarsus of the fore legs 

 is but little more than one half as long as its tibia. 



Female. The antennae shorter than the thorax, the wings 

 shorter and wider, the veins a little more distinct, the media more 

 curved, and the abdomen more robust ; everything else as with the 

 male. Length, male and female, 1.75 to 2.25 mim. Greenland. 

 Lundbeck, loc. cit. 



6. Camptocladius byssinus Schrank 



1803 Tipula Schrank. Fauna Boica. 3:76,2330 



1818 Chironomus Meigen. Syst Beschr. 1 : 46, 58 



1845 Chironomus Staeger. Krojer. Naturh. Tids. n. s. 1 :352, 7 



1850 Chironomus Zett Dipt. Scand. 9 : 3572, 98 



1864 Chironomus Schiner. Fauna Austr. 2 : 612 



1874 Camptocladius V. d. Wulp. Tijdschr. v. Ent 17 : 133 



1877 Camptocladius V. d. Wulp. Dipt Neerl. p.276 



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

 1898 Chironomus Lundb. Vidensk. Meddel. p.273, 53 



Velvet black; antennae brownish, plume of the male antenna 

 whitish. Legs blackish brown or pitchy, the hind legs hairy, the 

 fore metatarsus about one half as long as its tibia, the remaining 

 joints in decreasing lengths. Halteres black. Wings milk white, 

 with almost colorless veins excepting at the root of the wing, 

 where there is a short black dash (the basal portion of R) ; R 4 + 5 

 short, 'bent toward the costa, which it enters far from its ex- 

 tremity (pl.30, fig.3) ; the cell R 2+3 hence quite wide even near 

 its apical end; posterior branch of the cubitus sinuous; fork of 

 the cubitus noticeably distad of the crossvein. Length 1.75 to 

 2.25 mm. Y. d. Wulp, loc. cit. New Jersey. (Johnson, 1899) ; 

 Greenland (Staeger and Lundbeck) ; Ithaca N. Y., Michigan, 

 Washington State, Alaska. 



7. Camptocladius minimus Meigen 



1818 Chironomus Meig. Syst. Beschr. 1 : 47, 61 



1850 Chironomus Zett Dipt. Scand. 9 : 3573, 100 



1864 Chironomus Schiner. Fauna Austr. 2 : 612 



1874 Camptocladius V. d. Wulp. Tijd. v. Ent 17 : 133 



1877 CamptocUaiufl V, d, Wulp. Dipt Neerl. p.277 



