THE INSECTS OF NEW JERSEY. 487 



with fine white hair and often group themselves in large numbers on 

 the trunk when nearly full grown. All the species of this genus feed 

 in company, and hence are conspicuous even if not really harmful. 

 D. contracta Wlk. Throughout the State VI, VII; the larva locally com- 

 mon on oak, chestnut and, more rarely, hickory. 



HYPER/CSCHRA Butl. (NOTODONTA Ochs.) 



H. stragula Grt. Piedmont Plain and northward; adults V, VI and 

 again, the second brood, VII, VIII; larva on willow and poplar. 



H. georgica H. S. Hopatcong (Bt) ; Newark VIII (Sb); double-brood- 

 ed, larva on oaks (Dyar) and wild cherry (Sb). 



ODONTOSIA Hbn. 

 O. elegans Strck. Hopatcong (Pm) ; Newark (Coll). 



LOPHOPTERYX Steph. 

 L. americana Harv. (capucina L.) "New Jersey" (Blake, Packard) 



NOTODONTA Ochs. 

 N. basitriens Wlk. "New Jersey" (Packard "fide" Palm). 



PHEOSIA Hbn. 



P. dimidiata H. S. Hopatcong (Pm) ; Paterson VII, 28 (Gr) ; Newark 

 (Soc); Ocean Co. (Sm); larva on poplar IX (Gr). 



LOPHODONTA Pack. 



L. ferruginea Pack. Hopatcong (Bt) ; Newark (div) ; Staten Island 

 (Ds). Two brooded; adults V-VI, VII-VIII; larva on paper birch. 



L. angulosa S. & A. Hopatcong (Bt) ; Paterson (Gr) ; Newark (div); 

 Elizabeth (Bz) ; Staten Island (Ds) ; adults VI-VIII; larva on red 

 oak (Dyar) VIII-X. 



NADATA Wlk. 



N. gibbosa S. & A. Throughout the State. Double brooded; adults V-- 

 VI, VII-VIII; larva on oak, maple, white birch and plum, 

 var. doubledayi Pack. Occurs with the type, but more rarely. 



NERICE Wlk. 



N. bidentata Wlk. Throughout the State, locally not rare; larva on elm. 



