202 NEW YORK STATE MUSEUM 



dilated apically ; face thickly clothed with grayish setae. Mesono- 

 tum dark brown, shining. Scutellum reddish brown, postscutellum 

 a little darker. Abdomen brownish yellow, genitalia fuscous. 

 Wings hyaline, casta light brown ; subcosta uniting with the ante- 

 rior margin near the basal half. Halteres yellowish basally, fuscous 

 apically. Legs a fuscous straw ; claws rather long, slender, strongly 

 curved, the concavity finely denticulate, the pulvilli as long as the 

 claws. Genitalia; basal clasp segment short, stout, obliquely trun- 

 cate; terminal clasp segment short, stout, greatly swollen near the 

 distal fourth, obtusely rounded apically. Type Cecid. 1220. 



Corinthomyia currei Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 315 (Campylomyza) 



This species, studied through the courtesy of the United States 

 National Museum, was taken at Kaslo, B. C, by Mr R. P. Currie. 



Male. Length 1 mm. Antennae extending to the fourth ab- 

 dominal segment, thickly haired, dark brown ; 14 segments, the fifth 

 with a smooth stem one-fourth the length of the subcylindric basal 

 enlargement, which latter has a length three-quarters greater than 

 its diameter, 5 crenulate whorls ; terminal segment slightly pro- 

 duced, narrowly rounded apically. Palpi ; the first segment nar- 

 rowly oval, the second stout, one-half longer, the third about as 

 long as the second, more slender, the fourth one-half longer than 

 the third, somewhat dilated. Body a nearly uniform dark brown. 

 Wings hyaline, costa reddish brown, subcosta uniting with the 

 anterior margin at the basal half. Legs fuscous yellowish ; claws 

 long, slender, strongly curved, finely denticulate, the pulvilli longer 

 than the claws. Genitalia; basal clasp segment short, stout, obliquely 

 truncate ; terminal clasp segment with a short, narrow neck, greatly 

 swollen apically, the inner face flattened, greatly dilated and pro- 

 duced basally to form a distinct angle ; dorsal plate long, extremely 

 broad, the posterior margin produced mesially. (Plate 13, figure 2.) 

 Type Cecid. 881 a. 



HETEROPEZINAE 



This subfamily comprises a number of exceedingly peculiar forms, 

 some of them most remarkable on account of the great degree of 

 specialization by reduction. Members of this heteromorphic group 

 may be separated from the Itonididinae by the absence of cir- 

 cumfili, and from the Lestremiinae by the great reduction in vena- 

 tion, there being at most, four (rarely over three) long veins. The 

 metatarsus may be longer than the following segment, while the 

 number of tarsal segments may be reduced to two. Certain species 

 have quinquearticulate tarsi and the wing membrane thickly clothed 

 with rather broad, striate scales. Others have the wing membrane 

 hyaline and clothed with short, erect hairs, quite distinct from the 



