354 Report OF THE ENTOMOLOGISTS OF THE 
“The manner in which the pupa escapes from the cocoon was 
not satisfactorily observed. It was noticed, however, that old 
cocoons, which had remained in the ground over winter, became 
soft and spongy and hence easily broken. Also that from the 
cocoons from which the adult insects had emerged a large irregu- 
lar piece had been partially cut, as if by the jaws of the insect, 
and broken off from the end. 
The adults—— As previously stated the adult insects appear 
about May 10. They fly actively about during the heat of the ~ 
day, but in the early morning and toward evening or during un- 
usually cool days they seek shelter on the under side of the leaves, 
remaining sluggish until warmed by the rays of the sun. 
The female.— The following technical description is taken from 
Mr. Edward Norton’s monograph’ of the Tenthredinidae: 
“Color black, head rather rugose, nasus somewhat incurved; 
head pubescent except about ocelli; mandibles with 2 stout 
inner teeth; tegule, most of anterior angle, the third, fourth, fifth 
and part of sixth seguments of tergum yellowish white, venter 
ferruginous; legs paler, their coxee and basal half of femora and 
tips of posterior tibie blackish; inner claw tooth large. Wings 
smoky, hyaline, nervures brownish; marginal cross nervure curved 
and received near apex of third cell.” 
Four specimens examined by the writer corresponded to his 
description except in the color of the seguments of the tergum. 
In each of these specimens the second joint, as well as the third, 
fourth, fifth and part of the sixth seguments, is yellowish white. 
There is, however, slight variation in the markings which indi- 
cates that the difference in the markings of these specimens and 
those described by Mr. Norton is probably one of variation. The 
four specimens varied from 5 mm. to 6 mm. in length. (Plate 
XXVIII, Fig. 2.) 
The male.— Length 4.5 mm.; black, tegule and dorso-lateral 
margins of collar yellowish white; middle and posterior legs 

7Trans. Amer. Ent. Soc., 1: 250. 
