432 REPORT OF NEW JERSEY STATE MUSEUM. 



SAMIA Hbn. 



S. cecropia Linn, ccurs throughout the State June to August, and is 

 by no means rare, although the adult is not often seen. The larvae 

 feed on most orchard and shade trees, and also on grape and other 

 small fruits, sometimes devouring considerable foliage, and yet never 

 abundant enough to do any material injury. The cocoons pass the 

 winter attached to twigs or some other support, and there is only 

 one brood. 



CALLOSAMIA Pack. 



C. promethea Dru. Common throughout the State June to August, and 

 has two broods. The larva feeds chiefly on sassafras, but also on a 

 large variety of other shrubs as well as fruit and shade trees. The 

 cocoon is fastened to the twigs and remains suspended during the 

 winter. 



C. angulifera Wlk. Also quite generally distributed and two-brooded; 

 but decidedly rare. Has been recorded from May to August, the 

 larva feeding on tulip (Liriodendron), sassafras and wild cherry. 

 The cocoons are not attached to the twigs and are found on the 

 ground beneath the trees upon which the caterpillars have fed. 



ACTIAS Leach. 



A. lima Linn. Throughout the State, and locally not rare. It occurs 

 from June to September, is two-brooded, and the caterpillars feed 

 on walnut, sweet gum, birch and other forest trees. The cocoons 

 are not fastened to the trees and winter on the ground. 



TELEA Hbn. 



T. polyphemus Cram. Throughout the State, June to August, the larva 

 on most forest and shade trees. This is known as "the American 

 silkworm," and while by no means rare, is never plentiful enough 

 to do conspicuous injury. The cocoons drop to the ground and spend 

 the winter on the surface; there is also a midsummer brood. 



HYPERCHIRIA Hbn. 



H. io Fab. Common throughout the State, June to August, the larvae 

 on a large list of food plants. The caterpillar is a very spiny affair, 

 and if carelessly handled produces nettling. There is only one brood. 



Family CERATOCAMPID^. 



EAGLES Hbn. 



E. imperialis Dru. Throughout the State VI-VIII, sometimes not un- 

 commonly. The variety "didyma" DeB., less frequently, and speci- 

 fically reported from Mt. Holly and 5-mile beach. The caterpillars 



