256 THE CANADIAN ENTOMOLOGIST. 



joint ; those on joint 2 all prominent and pointing forward ; the dorsals 

 on joints 3 and 4 a little less prominent, those on 5 to 1 1 small, those on 

 12 and 13 about the same as those on 3 and 4; lateral tubercles just 

 above the legs, large, long and pointing outward and downward giving 

 the body a flattened appearance ; hairs on the dorsum not very long, the 

 clusters moderate as to number, the anterior and lateral full and long ; 

 all grey. Head black. Duration of this period seven days. 



After 3rd moult. — Length .50 inch. Marked as before but the body 

 more a series of alternate lines, and the pale lines more a clear yellow 

 the black lines where wide are mottled with yellow ; a whitish patch on 

 the posterior part of the dorsum of joint 4 and the anterior part of 5, and 

 the same on joints 8 and 9, the latter more almond-shaped than the first ; 

 tubercles, larger ; head and venter lead-black. Duration of this period 

 thirteen days. 



After 4th moult. — Length .85 inch. General appearance as before, 

 the yellow mottlings in the black more prominent and the light lines less 

 conspicuous ; the lateral hairs white, the tufts full and the hairs long ; 

 the dorsal tufts short and spreading ; the tubercles lead-black. Duration, 

 of this period fourteen days. . 



After 5 th moult. — Length 1.40 inches. The general colour grey, 

 composed of a great number of fine alternate longitudinal light and dark 

 grey lines, giving a paler shade than during the preceding period ; a deep 

 black transverse stripe back of joint 4, shaded each side with dark grey, 

 the black not always showing on account of being more or less covered 

 by the inter-segmental folds ; the dorsal tubercles on joint 4 large, buff, 

 studded with short black spines ; all the other dorsal tubercles small and 

 hairy, with only about six short black spines to each ; the lateral tubercles 

 large, extending outward, from the upper part of the outer end of the tuber- 

 cles about twelve black bristles or hairs as long as the body is wide ; below 

 these are finer white hairs many of which are longer than the black ones; 

 mingled with these white hairs are about a dozen that are tipped with 

 triangular fan-shaped tips resembling somewhat the tips on the tail 

 feathers of the peacock; under parts orange with a round black patch on 

 each joint. 



Mature Larva. — Length 2.25 inches. The markings and characters 

 are as at the beginning of this period. Duration of this period from 

 twenty-four to fifty-six days. 



