HOW TO KNOW THE BUTTERFLIES 



A. Apex of fore wings strongly falcate; hind wings tailed. 



(A. andria), p. 177. The Goatweed Emperor. 



AA. Wings neither falcate nor tailed. 



B. Front wings with a brown eyelike spot in cell Cu . 



(C. celtis), p. 174. The Gray Emperor. 



BB. Front wing without a brown eyelike spot. (C. clytoii), 



p. 175. The Tawny Emperor. 



The Gray Emperor 

 Chlorippc celtis (Chlo-rip'pe cel'tis) 

 Plate XXIX, Fig. i, 3 



In this and the following species the apex of the front 

 wings and the anal angle of the hind wings are considerably 

 produced in the males, but more rounded in the females. 

 The club of the antennas is quite broad and distinct. In 

 this species the'wings are russety brown marked with blackish 

 brown. There is a submarginal row of six eyelike spots on 

 the hind wings and one in cell Cu, of the fore wings. In the 

 fore wings there are also two brown spots and a bar in cell 

 R -)- M. The front wings are also crossed by two irregular 

 rows of white spots. Expanse of wings about two inches. 



Caterpillar. — Length one and one-fourth inches. The 

 green face has four paler green stripes on it ; there are 

 spines at the side and two long forked tubercles on the top of 

 the head. The body is naked, yellowish green above and 

 bluish green at the sides. 



Food-plant. — Hackberry. 



The gray emperor resembles the tawny em- 

 peror quite closely, except that it is smaller and 



174 



