202 NEW YORK STATE MUSEUM 



Head dark brown; the palpi lighter, the antennae yellowish, 

 the auteuual hairs of the male pale brown. Thorax and abdo- 

 men blackish brown, the thorax sometimes a little lighter with 

 indistinct stripes; the next to the last abdominal segment of the 

 male is broad, the hist much smaller; the claspers yellowish, fili- 

 form, quite long; the hairs of the abdomen pale yellow. Legs 

 pale yellow ; the extreme tip of each tibia with a brown spot ; the 

 fore metatarsus is fully twice as long as its tibia; the fore tarsi 

 of the male slightly hairy, yet not bearded. Halteres pale yellow. 

 Wings with a whitish tint and three gray spots which are par- 

 ticularly distinct in the female; one in the anal cell, another in 

 the fork of the cubitus and the last distad of the crossvein. 

 Length 2 to 2.9 mm. Translation. V. d. Wulp. loc. cit. 



This fly has been recorded from New Hampshire. About a dozen 

 specimens, male and female, from Ithaca, N. Y. and Washington 

 State agree with the above description excepting in the following 

 particulars : The space separating the two larger spots upon the 

 wing is filled by a very faint cloudiness ; the thorax and abdomen 

 are rather brownish in color, the segments of the latter with indis- 

 tinct paler posterior margins, in some specimens the bases of the 

 femora and the tarsi are slightly infuscated and the fore meta- 

 tarsus is If instead of twice as long as its tibia. The length also 

 ranged from 1.5 to 2 mm. instead of from 2 to 3 mm. (pl.28, fig.2). 

 As I had no European specimens for comparison I hesitated to 

 pronounce my specimens as distinct species. 



6. Chironomus spilopterus Williston 

 1896 Chironomus Williston. Trans. Ent. Soc. Lond. 273 



(Pl.28, fig.3) 

 Male and female. Face and front yellowish brown. Basal joint 

 of antennae brownish-yellow; flagellum brownish, the plumosity 

 of the male antennae blackish gray. Mesonotum brown or yellow- 

 ish brown, lightly white dusted; in well preserved specimens 

 brown vittate on the sides, and in front in the middle. Pleura 

 black, in part luteous. Scutellum yellow or yellowish brown. 

 Abdomen black, with yellowish hair; in the male, slender; in the 

 female, broader, and with whitish posterior margins to the 

 segments. Legs yellow, with rather abundant yellow hair; femora 

 in part brown or broAvnish ; front tibiae not more than one half 

 of the length of the front metatarsi. Wings whitish hyaline, with 

 pale blackish spots, which are more distinct when seen obliquely, 

 and situated as follows : One near the base, another near the mid- 

 dle, and a third near or at the tip of the first posterior cell 



