34 THE CANADIAN ENTOMOLOGIST. 



dark dull olive green, tinged with purple ; darker inferiorly, with a few 

 white dots. Lateral line broader than in vimilenta, but less clear. Purple 

 tinges at base of prolegs, which are black. Head much lighter than vinu- 

 lenta, black anteriorly. 



Sixth stage June 15. Nearest vinulenta, but a darker or blacker look- 

 ing larva. A broad dorsal blackish band attenuated intersegmentally, and 

 including the hardly visible median dorsal streak, which terminates in an 

 oblong spot on anal segment. The remainder of dorsal surface is mottled 

 greenish, gray and blackish. Superior sub-dorsal line broadly edged with 

 black; but inconspicuous, except on first and last segments. Lateral line 

 broad, more or less clearly defined, whitish, with blackish shades. Be- 

 neath light greenish. Else as in preceding stage. L. 30 m m. 



The larvae of all these species entered the earth during the second and 

 third weeks of June, spinning a slight cocoon, in which they remained 

 without changing until August, the imagoes appearing during the first week 

 of September. The pupa is light yellow brown, rather short and stout. 

 The larvse of devia were more delicate than the others, and only a few 

 were brought to maturity and inflated, so that no imagoes were obtained. 



Although Morrisoni and vinulenta are such abundant species in most 

 localities, I have but once found the larva of any Scopelosoma when col- 

 lecting, and I now recognize this to have been vinulenta, which was feed- 

 ing on Azalea viscosa. 



It will now be of interest to breed the four remaining species of this 

 genus, which are of a somewhat different type, and especially Moffatiana 

 and Grcefiana. It is a question which can only be decided by careful 

 breeding whether these two are identical, as some Entomologists suppose. 

 For my own part I am still inclined to think them distinct, as I have 

 found no difticulty in separating the two species in a large series of speci- 

 mens, although breeding from the egg may show them to be varietal forms. 



I may add that any one intending to rear larvee of this genus will do 

 well to keep the imagoes frozen on ice until spring is far enough advanced 

 to furnish tolerably mature leaves, since handling the young larvae among 

 small, sticky, immature leaves and buds is a most tedious operation, 

 which is rendered still more difficult by the habit of concealment peculiar 

 to these larvse. 



