xxxiii, '22] ENTOMOI OGICAL NEWS 81 



terminal growth, each egg being deposited in the axil formed by 

 the stem and leaf. Many are found on the inner bases of the 

 developing leaves near the shoot from which the leaves arise. 

 Some are found on the surface of the shoots or stems. Usually 

 they are deposited singly, rarely in pairs but an entire terminal 

 shoot may bear several or more eggs. The incubation period is 

 not definitely known but larvae 0.5 mm. in length were first 

 found on July 8. 



After hatching, the larvae feed on the upper epidermis of the 

 small leaves, causing them to turn brown in spots and later 

 entirely brown. About the last of July, when the larvae are 

 about 2 mm. in length, the webs are plainly visible. As the 

 larvae become older, their gregariousness becomes more pro- 

 nounced and the foliage is webbed -up more compactly. At 

 first the web includes the terminal shoot ; later several inches 

 behind the tip are included and such webbed-up shoots occur 

 on different parts of the plant, spoiling its ornamental appear- 

 ance. As the season progresses, the webs become larger, filled 

 with more excrement and the leaves become dry and dead. 

 Small junipers of the upright kind, such as hibcrnica, may be 

 webbed-up solid from top to bottom. There appears to be only 

 one brood each year, the caterpillars developing slowly during 

 the summer and hibernating during the cold months. In the 

 spring, when they become active, if no or little green food is 

 available, they appear to develop as readily on the dried foliage. 

 The webs vary in length from one inch to two or three inches 

 and longer, depending on the manner of growth of the plant 

 infested. Such nests contain from several to fifteen or more 

 larvae. 



Egg. Length G.5 mm. Width 0.21 mm. Subcylindrical, with hroadly 

 rounded ends : ends almost flat ; one end slightly narrower than the 

 other; sides suhparallcl ; whitish when first laid, later becoming pinkish 

 or tinged with pink: chorion sculptured with numerous, longitudinal, ir- 

 regularly parallel wavy ridges. 



Lar:\i. Length ahnut 14 mm. Width of head 1 mm. Klongate, nar- 

 row, subcylindrical, slightly tapering at both extremities. Head and pro- 

 thorax suhequal in width, remaining thoracic and abdominal segments, 

 except the 8th and 9th, slightly wider and subequal in length. Anterior 

 dorsal half of mesothorax and mctathorax with transverse plicae. Head 

 and body segments each bearing several, short, white hairs, most of them 



