MAY FLIES AND MIDGES OF NEW YORK 263 



Black, slightly shining. Antennae black, the plumes of the 

 male dark brown. Legs blackish or pitchy or even yellowish 

 brown; the fore metatarsus one third shorter than its tibia. Hal- 

 teres black. Wings Avith a grayish tint; the anterior veins pale 

 brown, the others uncolored; no black dash at root of wing; R^^-g 

 bent upwards toward the costa and for a short distance appears 

 to coalesce so that at a casual glance it appears thickened at the 

 end; posterior branch of cubitus not so strongly bent as in 

 byssinus; fork of the cubitus noticeably distad of the cross- 

 vein, pl.30, fig.4. Length 1.25 to 1.75 mm. Ithaca N. Y.; Idaho. 

 Larva found in dung (Howard, 1901). 



8. Camptocladius parvus Lundbeck 



1S9S h i r o u o m u s Luudb. Vidensk. Meddel. p. 275, 55 

 1902 Camptocladius Kertesz. Cat'l. Dipt. 1 : 215 



Female. Thorax black, somewhat shining, with two sometimes 

 indistinct cinereous stripes, or with three black stripes, the mid- 

 dle one posteriorh", the lateral ones anteriorly, abbreviated. The 

 scutellum is brown, the abdomen is black or fuscous, slightly yel- 

 loAV pilose. The antennae and palpi are dark. The legs are brown, 

 more or less pale. The halteres are dark, the peduncle and the 

 base of the knob sordidly white. The wings are hyaline, in cer- 

 tain lights clear white, pruinose or milky, the posterior margin 

 long ciliated, the anal lobe but little produced, rounded; the veins 

 pale and thin; the radius is somewhat brownis^h, its anterior 

 branch is short, and runs into the costa near the middle of the 

 wing; its posterior branch is nearly straight, the media curves 

 towards the ti]:> and runs into it, the cubitus forks somewhat 

 distad of the crossvein, its posterior branch is suddenly deflected, 

 the anterior branch and the main trunk are about of equal length. 

 The middle and hind legs are distinctly pilose, the anterior meta- 

 tarus is one half the length of its tibia. Length 1.5 mm. Green- 

 land. Lundbeck, loc. cit. 



9. Camptocladius velutinus Lundbeck 



1898 C h 1 1- o n m u s Lundb. Vidensk. Meddel. p.274, 54 

 1902 Camptocladius Kertesz. Cat'l. Dipt. 1 :215 



This species resembles G. byssinus and G . minimus, 

 but dilfers from the former in having smoky wings and in being 

 smaller; from the latter in having shorter metatarsi, and from 

 each in its wing venation. 



Female. Thorax black, velvety, with two indistinct longitudinal 

 stripes, anteriorly confluent; the abdomen black, velvety, sparsely 

 yellow, pilose; the scutellum brown. Antennae and palpi dark. 



