282 THE CANADIAN KNTOMOLOGIST. 



in the green specimens, and are bordered by dark brown. The ventral 

 surface of all the specimens is slightly paler than the dorsal. Tubercles 

 black and very small. Thoracic feet and prolegs concolorous with 

 venter. 



On the 27th June some of the specimens passed the fifth moult, the 

 remainder on the 28th and 29th. 



Stage VI — Length 23 mm. Head 2.0 to 2.5 mm. wide, as before, 

 testaceous, mottled and reticulated with dark brown. The larvae in this 

 stage are almost the same as in the last. Nearly half the specimens are 

 brownish, some having a slight reddish shade, the venter being of a paler 

 brown than the dorsum. The majority of the larvae, however, ate of an 

 apple-green colour, with the venter slightly paler. The whole skin is 

 spotted with white. Dorsal stripe heavily bordered on either side 

 with blackish brown. Lateral stripe also bordered with tie same colour, 

 but not so heavily. Substigmatal band pale yellow, the lower half being 

 brownish red. In the green specimens the dorsal and lateral stripes are 

 not so conspicuous as in the dark larvae, and are only faintly bordered 

 with dark green, the substigmatal band being bright yellow, with no red in 

 it whatever. The spiracles are white, lined with black, in both the brown 

 and the green larvae. Tubercles small, black bristles short. In the green 

 specimens the cervical shield is concolorous with the body. In the dark 

 specimens the shield is noticeable, being of a darker colour than the body. 

 Thoracic feet and prolegs all concolorous with venter. 



On the 30th June several larvae passed the sixth moult, and by 3rd 

 July nearly all had moulted. 



Stage VII. — Length, 29 mm. Head 2.8 to 3.1 mm., as in last 

 stage. The intensity of the colour of the head, as is natural in a 

 caterpillar presenting such a wide range of colour variation, varies 

 in different specimens, but, on the whole, becomes darker and the 

 markings more distinct with each moult. The larva- in this stage are of 

 two colours as before. For a day or so after moulting, the dorsal 

 and lateral stripes are very conspicuous. After a few days the lateral 

 stripe is not so plain as at first, and in some specimens is interrupted. 

 The dorsal stripe remains conspicuous, and has the appearance of a 

 blackish band with a medio-dorsal line of pale yellow. The substigmatal 

 band is very wide, pale bright yellow, many specimens, both green and 

 brownish, having the lower half suffused with light red. This band 

 is very conspicuous, and extends from the front edge of segment 2 right 



