264 NEW YORE STATE MUSEUM 
EXPLANATION OF PLATES 
Plate 1. Sugar orchard of Ely Swart, near Arkvilfe, Delaware co., 
showing extensive defoliation by the forest tent caterpillar. 
Plate 2. Nearer view of a portion of the same. 
Plate 3. Single tree on same place. 
Plate 4. Maples and birches near Margaretville, Delaware co., 
showing work of same insect. 
Plate 5. Larvae of Mamestra picta on portion of beet leaf. 
Plate 6. Ewurvpelma hentzit. Fig. 1, dorsal aspect of cast skin: 
a, dorsum of cephalo-thorax; 4, location of eyes; ¢c, empty coxal 
cavities; ¢, loose skin of abdomen; /, palpi. 
Plate 7. urypelma hentzii. Fig. 2, ventral aspect of cast skin: 
a, poison fangs; other lettering as in the preceding. 

a Plates 1-4 are from photographs taken by H. B. Ingram, of Kingston, N. Y., July 8, 1808. 
