452 NEW YORK STATE MUSEUM 



lection. The alar expanse of the males is 25 mm and of the fe- 

 males 35 mm. The antennae are nearly equal to the expanded 

 fore wings but are variable. The compound eyes are marked 

 about as in S. f u 1 i g i n o s a . The species is much like S. 

 i n f u m a t a in most particulars, but there are only one or two 

 Sc-Ri cross veins of the fore wings; R3 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 

 of S. 1 u t ar i a . 



Subfamily corydalinae 



Here we find the accessory veins of the radial sector in both 

 pairs of wings arising from Ro 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, 



T ABIDES TO GENERA 



Adults 



<i 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 



6 Media of the fore wings with only two branches [fig.24]; 



lateral margins of the head not toothed [pl.52] ....Chauliodes 

 hh 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 



N. c o r r i p e n s Neuromus 



■an. 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 



