16 



This species feeds oa the leaves of nearly all deciduous trees, and 

 fir, spruce, lurch aud cypress. 



The secoud species is called the Willow Tussociv Moth ( Orgyia 

 dejinita, V-dok.) aud was for a long time confounded with the pre- 

 ceding species with which the male and female moths agree very 

 closely, but there are marked differences in the other stages. 



The eggs are laid in the fall in clusters on the old cocoon adhering 

 to the branches of trees, aud covered with hair from the abdomen of 

 the female, which enables one to distinguish them from the white, 

 froth-covered eggs of the white-marked Tussock-moth or the naked 

 eggs of the following species. 



The full grown caterpillar has the head and body pale yellow with 

 an almost colorless stripe along the middle of the back. This stripe 

 is narrow, and greenish on the third and fourth segments, widening 

 and enclosing the yellow, dorsal brush-like tufts on the fifth, sixth, 

 seventh and eighth segments, narrowing on the ninth, tenth, eleventh 

 and twelfth segments, enclosing the two retractile tubercles, and is 

 abse'nt on the last segment. There is a narrow subdorsal and a 

 fainter stigmatal band. These bands vary in color from dark brown 

 to black, and there is a velvety-black spot between the tufts on the 

 top of the sixth, seventh and eighth segments. The tubercles are all 

 pale yellow, and a long pencil of black hairs inclining forward 

 arises from each side of the second segment, while a similar one of 

 light brown and black hair inclines backward from the top of the 

 twelfth segment. The other hair is long, thin and white. 



This species feeds on the leaves of the willow, oak, maple and 

 many other trees. 



The third species of Tussock Moth is the common European 

 Orgyia antiqua, Linn. This species has long been known in this 

 country, but was supposed to be distinct and was described by Dr. 

 Fitch as the Modern Vaporer Moth (Orgyia nova) , and again by Mr. 

 Henry Edwards from Californian specimens as Orgyia badia. 



The female is wingless like the other species, and lays her eggs 

 without any covering on the old cocoon which is fastened to the 

 branch of a tree. A cluster of these eggs was received from Fitch- 

 burg, Mass., April 14, 1891, on a branch of quince, and began to 

 hatch April 22. The caterpillars reached their full growth and began 

 to spin cocoons June l.j. The first moths emerged June 25, aud 

 eggs were laid July 5, which hatched on the 15, but the caterpillars 



