402 ENTOMOLOGICAL NEWS [Nov., '12 



single trees, while a half dozen to a tree were common. The 

 1903 generation in Virginia (Montgomery County) hatched 

 about March 26, upon which date some colonies of the young 

 larvae were observed to have formed a web over the egg- 

 masses. On May 8, it was noted that larvae in woodlands were 

 more advanced than those occurring in orchards. An adult of 

 this generation was captured on June 24 at Blacksburg and the 

 first fresh egg-mass was seen on June 24, 1903, at Cambria. 

 In damp, warm weather, the covering over the egg-mass be- 

 comes soft and gummy, due more to the moisture than to the 

 warmth, for when masses in this condition are placed in a warm 

 room they become hardened again ; warm water produces the 

 same effect as the warm, damp weather. 



Of a number of egg-masses collected March 16, 1903, at 

 Blacksburg, Virginia, from apple, in one case four of them 

 were together, end to end, and in another three; in six cases 

 two masses were together, and in another case two masses 

 were pressed together so as to be indistinguishable (nearly). 

 The manner of deposition of the mass varies considerably; 

 usually, however, they are deposited singly on small twigs and 

 to some extent generally embracing a small offshoot. Thus, 

 in seventy-seven random masses collected, forty-nine were 

 embracing a bud-shoot while the other twenty-eight were en- 

 tirely away from shoots. In some cases the mass is laid down 

 in a crotch, that is, where many small twigs have their origin, 

 and in others they entirely surround the base of a shoot. Once 

 three eggs laid side by side were found isolated on a twig. 

 During 1903, egg masses exposed to the warmth of a room 

 about the end of the second week in March would commence 

 to hatch after several hours' exposure. 



In this species the winter is passed as a perfect embryo 

 within the egg; it is quite probable that some of these hatch 

 before winter sets in, as is indicated by finding holes involving 

 the whole top of the egg in some of the masses. Out of seven 

 thousand five hundred and six eggs obtained early in March, 

 1903, from twenty random egg masses sixty-four had thus 

 apparently hatched, or 0.85 per cent. The perfect embryos 



