94 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



straight; halteres yellow; length, 2.5 mm, A male specimen collected 

 May 6 by Mr. H. S. Barber. 



Habitat. — Great Falls, Maryland. 



%;e.— Cat. No. 6175, U.S.N.M. 



CHIRONOMUS PULCHRIPENNIS, new species. 



Head and antenna yellow, apical half of last joint of the latter and 

 the mouth parts brown; thorax opaque, greenish yellow, mesonotum 

 marked with a pair of lateral brown vittffi behind its middle, metano- 

 tum with a pair of brown spots which approach each other posteriori}^; 

 scutellum and abdomen green, the latter with the hind margins of the 

 segments yellowish, bases of segments six to eight and nearly the 

 whole of the following two brown; legs whitish, the knees black, this 

 color extending nearly to the middle of the middle and hind femora, 

 front tibia? four-fifths as long as the first joint of their tarsi; wings 

 whitish, the costal cell except its apex brown, a broad brown band 

 crosses the wing, passing over the bases of the first and third posterior 

 cells and prolonged along the hind margin nearh" to the anal angle, 

 apex of wings ])roadly Ijrown from third vein to upi^er branch of the 

 fifth; halteres white; length, 4 mm. A female specimen collected by 

 Mrs. Annie T. Slosson. 



Ifahitat. — Franconia, New Hampshire. 



Ti/pe.— Cat No. 6176, U.S.N.M. 



CHIRONOMUS VARIPENNIS, new species. 



Head and Iwdy dark ])rown, a largo dull yellowish humeral spot, 

 antennie except the first joint yellow, the hairs gray; thorax opaque, 

 largely gray jiruinose, narrow hind margins of abdominal segments 

 gray pruinose; femora brown, the ends narrowly and a ])and before 

 the apex of each, yellow; front tibia; ver}^ short, yellow, the bases 

 brown, other tibia? brown, an indistinct yellowish ring beyond the 

 base; front tarsi wanting, the others yellow; wings whitish, marked 

 with eleven brown spots as follows: Three in a row l)ehind the fifth 

 vein, one before middle and another in middle of apical margin of 

 third posterior cell, one in base of first posterior cell, another in the 

 cell below it, and a third midway between the latter and the base of 

 this cell, one in middle and another in apex of first posterior cell, also 

 a small one in apex of second posterior ceil; halteres whitish; length, 

 3 mm. A male specimen collected August 14 by Mr. H. S. Barber. 



Habitat. — Las Vegas Hot Springs, New Mexico. 



T(/pt.—Ciit. No. 6177, IT.S.N.M. 



CHIRONOMUS ATRIMANUS, new species. 



Head yellowish brown, antennie yellow, the last joint and the mouth 

 parts brown; thorax and scutellum black, highly polished; abdomen 

 somewhat polished, black, the first segment yellow, hind margins of 



