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, costa 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. Bul. 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- 
dominai 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 12, figure 2.) 
Type Cecid. 881a. 
HETERO PEZINAE 
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 
v ee 
