64 THE CANADIAN ENTOMOLOGIST. 



The abdomen is of a greenish oUve, having a reddish hue on the sides 

 and spotted with white and black. 



There are differences, however, which would enable the most casual 

 observer to separate them without difficulty. There is a difference in size, 

 lineata (fig. 3) being the largest, measuring when its wings are spread about 

 three and a half inches, while chamcencrii (fig. 2) rarely exceeds two and 

 three-quarter inches. The central band on the fore wings in chamoenerii is 

 wider and more irregular, but the most striking point of difference between 

 the species is that the veins of the fore wings in lineata are distinctly 

 margined with white, a character entirely wanting in chamcenerii. These 

 differences will be readily appreciated by reference to the figures. 



The larva of lineata varies considerably in color. Mr. Riley says : 

 " The most common form is that given at fig. 4, where the body is of a 

 yellowish green, with a prominent sub-dorsal row of elliptical spots, each 

 spot consisting of two curved black lines, enclosing superiorly a bright 

 crimson space and inferiorly a pale yellow line, the whole row of spots 

 being connected by a pale yellow stripe edged above with black. In some 

 specimens these eye-like spots are disconnected, and the space between 

 the black crescents is of a uniform cream color. The breathing holes are 

 either surrounded with black or black edged with yellow. The other form 

 of the caterpillar (see fig. 5) is black, with a yellow line along the back 

 and a series of pale yellow spots and darker yellow dots. This dark form 

 is, however, subject to great variation, some specimens entirely lacking the 

 line along the back." 



According to Mr. Riley, it feeds upon purslane, turnip, buckwheat, 

 water melon, and even grape and apple leaves, and is found in the larval 

 condition during the month of July. Mr. Pyle, of Dundas, Ontario, has 

 found it feeding on the common plantain. When full grown it is said to 

 descend into the ground, where within a smooth cavity it changes into a 

 light brown chrysalis, emerging as a moth in September. 



LARVA OF D. CHAMCENERII. 



Described from three specimens found feeding on grape, July 5th. 

 Length, two and a half inches, onisciform. 



Head small, rather fiat in front, slightly bilobed, and of a dull pinkish 

 brown color, with a black stripe across the front at base. Basal half of 



