THE CANADIAN ENTOMOLOGIST. 



11 



to the base of the horn. The skin of the body is roughened with numer- 

 ous white-tipped granulations, and the stout horn on the hinder part of the 



body is of a bluish green color. 

 This larva when irritated emits a 

 peculiar musical chirping sound. 



When full grown it buries itself 

 in the earth, where it changes to a 

 chestnut brown chrysalis, which is 

 Fig. 2. smooth, with a short, rough terminal 



spine. In this condition it remains during the winter, escaping as a moth 

 early the following summer. 



The life history of the Purblind Sphinx, Smer'mthus myops, Fig. 3, is 

 very similar to that of the species just described. It appears in the per- 

 fect state also in June and ^^^ .^ 

 July. The moth is very 

 handsome. The head and 

 thorax are chocolate brown 

 with a purplish tinge, the 

 thorax is striped with yellow 

 and the abdomen brown 

 marked with yellowish spots. 

 The fore wings are angulated Fig. 3. 

 and excavated on the hind margin, and are ornamented with bands and 

 patches of black on a chocolate-brown ground. The hind wings are dull 

 yellow with the outer half a rich brown, and have an eye-like spot towards 

 the inner margin, black with a pale blue centre. 



The caterpillar much resembles Fig. 2. It is green with two rows of 

 reddish brown spots on each side and six oblique yellow lines, with two 

 shorter lines of the same color on the anterior segments. The head is 

 bluish green, margined with yellow, and the curved horn at the tail green, 

 tinged with yellow at the sides. When full grown it measures about two 

 inches in length, and is nearly cylindrical in form. It feeds on the leaves 

 of the cherry tree, both the wild and cultivated varieties. 



The insect passes the winter in the pupa state under the earth ; the 

 chrysalis is smooth and of a dark brown color. Both these insects are 

 comparatively rare, and have never, as far as we know, appeared in suffi- 

 cient numbers to prove injurious to the trees on which they feed. 



