88 
144. The Tufted Tent-Caterpillar. 
Malacosoma (Clisiocampa) constricta Stretch. 
Larvee on oak in California. 
Exuisir: Adults, eggs, larvee. 
145. The American Tent-Caterpillar. 
Malacosoma (Clisiocampa) americana Fab. 
Larvee principally destructive to fruit trees, but also to wild cherry and a few 
other forest trees in the Eastern States. 
Exnuisit: Adults, eggs. 
146. The Rocky Mountain Tent-Caterpillar. 
Malacosoma ( Clisiocampa) fragilis Stretch. 
Larvee feed on deciduous forest trees generally, and are at times very destructive. 
Rocky Mountain States. 
Exuisir: Adults, eggs, larvee. 
‘ 147. The Northwestern Tent-Caterpillar. 
Malacosoma ( Clisiocampa) pluvialis Dyar. 
Larvee on most species of deciduous forest trees in the Northwestern States. 
Exursit: Adults, larva, cocoon. 
148. The Californian Tent-Caterpillar. 
Malacosoma ( Clisiocampa) californica Pack. 
Larvze on oak in California. 
Exarsir: Adults, larva. . 
149. The Spring Canker-Worm. 
Paleacrita vernata Harr. 
The larye feed upon the surface of the leaves of various forest and shade trees, 
especially upon elm in the Eastern States. 
Exuisir: Adults, pupa. 
CASE SO. 
150. The Cherry-Leaf Webworm. 
Calocalpe undulata Linn. 
The larvee live in webs on the terminal shoots of. black cherry. 
Exursir: Adults, work. 
151. The Western Oak Span-Worm. 
Therina somniaria Hulst. 
The larvee occur on oak in the Northwestern States, sometimes defoliating trees. 
Exursir: Adults, pupeze. 
152. The Large Forest Span-Worm. 
Sabulodes transversata Dru. 
Larvee occur on maple, poplar, oak, ete. 
Exuisir: Adults, larva. 
153. The Crinkly Flannel Moth. 
Lagoa crispata Pack. 
The larve, which somewhat resemble the slug caterpillars, feed upon oak, poplar, 
and a variety of other deciduous trees. : 
Exuisit: Adults. 
