EXPLANATION OF PLATES. 



PLATE I. 



Transformations op the Celery Caterpillar. Frontispiece. 



a, egg. 



b, full-grown larva. 



c, front view of head of same, with 



6cent organs extended. 



d, chrysalis. 



e, butterfly at rest. 



/, butterfly with wings .spread. 

 a and c are slightly magnified. 



PLATE II. 

 A Group of Aegerian Moths (Twice Natural Size). 



1. Peach Tree-borer, Sanninaexiliosa, 



male. 



2. Peach Tree-borer, Sannina exitiosa, 



female. 



3. Pear Tree-borer, Aegeriapyri, male. 



4. Imported Currant-borer, Aegeria 



tipuliform is, male. 



5. Maple Tree-borer, Aegeria acerni. 



female. 

 0. Aegeria lustrans. 



7. Plum iTee-borer, Algeria pzstzpss. 



PLATE III. 

 A Group of Leaf-hoppers. (Much Magnified.) 



1. Typhlocyba obliqua, 



2. Typhlocyba trlcincta. 



3. Typhlocyba basilaris. 



1. Typhlocyba comes. 

 5. Typhlocyba vitis. 

 0. Typhlocyba vulnerata. 

 Typhlocyba oil if ex. 



PLATE IV. 

 The Cecropia Emperor-moth. Platysamia cecropia. 



PLATE V. 

 The Tomato-worm Sphinx. Phlegethontius celeus. 



PLATE VI. 



The Striped Harvest Spider. IAobunum vittatum. 



PLATE VII. 

 The Screw-worm. Compsomyia macellaria. 



