262 ■ NEW YORK STATE MUSEUM 



Idbes 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 R4+5, the media runs into the margin 

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

 crossvein, its anterior branch ends in the posterior margin of 

 the wing a little proximad of the end of R4-!-.-,, 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 2.2.5 mm. Greenland. 

 Lundbeck, loc. cit. 



6. Camptocladius byssinus Schrank 



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



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



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



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



1864 Chironomus Schiuer. Fauna Austr. 2 : 612 



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



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



1878 Chironomus Ost. Sack. Cat'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 liairy, 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^-^, 

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

 tremity (pl.30, fig.3) ; the cell R.+m 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. V. d. Wulp, loc. cit. New Jersey. (Johnson. 1809) ; 

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

 Washington State, Alaska. 



7. Camptocladius minimus Meigen 



1818 C h i r o n o 111 u s •SleU;. Sypt. Beschr. 1 : 47. 61 



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



1864 ChirononVus Schiner. Faima Austr. 2:612 



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



1877 Camptocladius V. d. Wulp. Dipt. Neerl. p.277 



