316 NEW YORK STATE MUSEUM 
d Basal enlargement of the antennal segments with a length 
about 4 greater than its diameter; the 4th palpal segment 
i longer thanathersdesnene. sae barlowi n. sp. C. 798 
ccc Terminal clasp segment long, more or less flattened, not roundly 
swollen; pulvilli absent 3 
d Basal enlargement of the antennal segment with a length 
fully twice its diameter; the 4th palpal segment twice the 
length of the 3d, the base of the terminal clasp segment 
not greatly flattened and dilated...... cerasi Felt, €iem 
dd Basal enlargement of the antennal segment probably with a 
length not more than %4 greater than its diameter; the 4th 
palpal segment only ™% longer than the 3d; terminal clasp 
segment broad at base, strongly flattened...............% 
gibbosa Felt, C. 162 
bbb Antennal segments with a smooth stem fully % longer than the 
basal enlargement; males 
c Terminal clasp segment stout, elongate, ovoid; palpi quadriar- 
tictilates Screen et eee ben eee oe modesta Felt, C wg 
cc Terminal clasp segment stout, produced, not dilated; palpi tri- 
articulate as > wonciueeen ee Ae arere racer POS AING, iM, Ode (Cy Mae 
ccc Terminal clasp segment much produced; palpi quadriarticu- 
Sele micaner nas a Pen age roma Ri Am nay Syl fe tuckeri n. sp., ©: 1256 
cccc Terminal clasp segment greatly dilated, subtriangular in out- 
Wha Koper aenetas TWN tite aeons Miri alera Gai o dilatata.  Helt, ©. 1109 
HETEROPEZINAE 
This subfamily comprises a few peculiar forms. The metatarsus 
is usually longer than the following segment and there are at most 
three long veins. The ocelli are wanting and the second tarsal 
segment is somewhat shorter than the first. The American repre- 
sentatives of this group may be separated by the following table. 
Key to genera 
a Wing; membrane finely haired, the long veins simple 
b Tarsi quadriarticulate, the metatarsus longer than the second seg- 
INE EY aT aire Serene ede a eee is UN airs Miastor Mein. 
bb Tarsi biarticulate, the metatarsus shorter than the second segment... 
Oligarces Mein. 
aa Wing; membrane thickly scaled 
b Three simple long veins, the tarsi 5 segmented....Brachyneura Rond. 
Miastor Mein. 
But one American representative of this genus, M.americana 
Felt, is known. ‘This species was taken at Highland, N. Y., on 
either beech or chestnut leaves. 
