74 
PSYCHE 
[April-June 
COCOONS AND YOUNG OF CONIOPTERYX VICINA. 
BY T. H. EMERTON, BOSTON, MASS. 
While hunting- for spiders under leaves on the ground at Allston, a suburb 
of Boston, in November, I found the cocoons of this neuropterons insect at- 
tached to oak leaves and resembling the egg cocoons of small spiders like 
Alicaria and Castaneira. The cocoons were white and had fine parallel wrinkles 
across the upper surface, in this difYering from spider cocoons, which are 
usually smooth. In nearly every case the cocoons were on small broken pieces 
of leaves of last season's growth. The under side of the cocoon is thin and 
attached to the leaf by its whole surface. The upper side is formed by a flat 
ring sometimes thickened on the inner edge and a transversely wrinkled cover 
which is not attached to the inner edge of the ring but beyonil it u''ar the outer 
border of the cocoon, as shown in the section. The mature insect tears a hole 
CROSS SECTION OF COCOON 
Winter larva as 
taken from cocoon 
Pupa with larva 
skin adhering to 
lower end. 
COCOON AITACHEP TO l!AKK 
