452 NEW YORK STATE MUSEUM 
lection. The alar expanse of the males is 25 mm and of the fe- 
males 355 mm. The antennae are nearly equal to the expanded 
fore wings but are variable. The compound eyes are marked 
about as in S.fuliginosa. The species iy much like S. 
infumata in most particulars, but there are only one or two 
Sc-R, cross veins of the fore wings; R, has two simple or forked 
branches going forward, and there is no yellow infusion spread- 
ing around the eyes; the legs are ferruginous, not black. Lar- | 
vae in alcohol have abdomen black with a row of yellow mark- 
ings down the middle of the dorsal side. The pupa has no ab- 
dominal appendages, and is very light yellow all over, and has 
a whorl of hairs over each abdominal segment. 
S. sibirica McLachlan. Four specimens with this label are in 
the Hagen collection, but they do not differ from the specimens 
or S.lutaria. | 
Subfamily cCoORYDALINAE 
Here we find the accessory veins of the radial sector in both 
pairs of wings arising from R, and extending backward. The 
insects are provided with three ocelli. The tarsi are not at all 
lobed or sometimes slightly so. Anal prolegs and claws are 
present in the larvae. Three genera are included in this sub- 
family, Chauliodes, Neuromus, and Corydalis. 
TABLES TO GENERA 
Adults 
a Mandibles when closed largely concealed by the labrum; 
mandibles of male hardly more elongated than those of the 
female; white dots rarely found within the cells of the 
wings 
b Media of the fore wings with only two branches [fig.24]; 
lateral margins of the head not toothed [pl.52]....Chauliodes 
bb Media of the fore wings always with more than two 
branches’ [fig.25]; lateral margin of the head 
bidentate or unidentate or only slightly unidentate in 
Ny COL Pl PF Ci Gee eee cence ee ane Gre ee ne ele Neuromus 
aa Mandibles when closed not concealed by the labrum; mandi- 
bles of male enormously elongated; white dots always 
found in some of the cells of the fore wings........... Corydalis 
Larvae 
a Tracheal gills wanting; last pair of spiracles raised on prom- 
inent conical folds or long respiratory tubes......... Chauliodes 
