210 NEW YORK STATE MUSEUM 



Female. Like the male, excepting in the following particulars: 

 Tips of antennal joints reddish brown, the hairs pale; thorax 

 with a little more cinereous coloring, the hairs upon the abdomen 

 a little shorter; fore tarsi bare. Described from a number of 

 specimens. Ithaca, N. Y., Kansas. 



17. Chironomus halteralis Coquillett 



1901 Cliirouomus Coq. Ent. News. p. 17 



(P1.28, fig.7) 

 Head black, palpi and antennae yellowish brown, plumosity 

 of male antennae dark gray; thorax dark brown, the anterior end 

 tinged Avith yellow, a pair of broad, gray pruinose vittae on the 

 posterior half of the mesonotum, the hairs light jellow; scutellum 

 dark yellow ; abdomen black, slightly polished, thinly covered with 

 rather long jellow hairs; femora, tibiae and tarsi yellow, bases 

 of femora slightly tinged with brown; front tarsi slender, almost 

 as long as the body, destitute of hairs, the first joint about twice 

 as long as the front tibia; middle and hind tibiae and their tarsi 

 in the male, thickly covered witli rather long yellow hairs, much 

 sparser in the female; halteres pale yellow, the knobs black; wings 

 bare, hyaline, the apical half slightly darker, veins in the basal 

 half yellow, in the apical half more brownish ; length 2 to 3 mm. 

 Washington, D. G, Coquillett loc. cit. 



A number of specimens from Ithaca, N. Y., agree with this 

 description. 



18. Chironomus nitidellus Coquillett 

 1901 Chironomus Coq. Proc. U. S. Nat. Mus. 23 :608 



Male. Head black, mouth parts yellow, antennae, except the 

 basal joint, yellow, the hairs whitish; body black, polished, the 

 first two abdominal segments and the claspers yellow ; legs yellow, 

 the femora except their bases, front tibiae wholly, and apices of 

 hind ones brown, front tarsi bare; Avings bare, whitish hyalinC; 

 the veins brown, halteres yellow; length, 2.5 mm. Riverton, N.J. 

 Coquillett loc. cit. 



19. Chironomus fallax n.sp. 

 (P1.28, fig.8) 



Female. Black; first abdominal segment yellow or greenish; 

 legs partly black. Length, 3.5 mm. 



Head, including proboscis, palpi and antennae yellowish, the 

 basal joint of the latter somewhat brownish. Thorax cinereous 

 black, with three broad shining black stripes, more distinct when 

 vieTved obliquely. Pectus, pleura, and scutellum brown, the 



