230 THE CANADIAN ENTOMOLOGIST. 



One example shows much more of the black shading than the others, 

 having it quite prominent between all the abdominal joints and in the 

 dark parts of the stripes as a shading or staining. Duration of this period 

 seven days. 



After third moult. — Length, .70 inch. Striped as before but the 

 striping more delicate, the stripes now showing that they are composed of 

 dots, the dots in the dark stripes being a little darker than the dots 

 forming the light stripes, the darkest dots forming the lines separating the 

 stripes ; the pale stripes show a little orange tinting, especially on the 

 incissures ; the piliferous spots inconspicuous, orange, the posterior on 

 joints 9 and 12 a little more prominent, a blackish patch from those on 

 9 back obliquely on to the sides of 10; a small amount, mere trace, of 

 the black back of the posterior dorsals of 12. Head coloured like the 

 body, an anterio-lateral black stripe and an imperfect anterior one. 

 Venter whitish, a large black patch in the centre of each abdominal joint ; 

 those of thorax blended into a narrow stripe. The lateral fringes begin 

 to show. Duration of this period seven days. 



After fonrtJi inonlt. — Length, i.io inches. Only slightly changed 

 from the preceding stage. Colour delicate whitish lilac ; the piliferous 

 spots a little more prominent than before and the fringe more developed 

 though still short; the posterior part of joint 9 elevated between the 

 posterior pair of piliferous spots, carrying these with the elevations, about 

 .02 of an inch above the rest of the dorsum, the elevation orange in the 

 centre, and from here blotches of orange and black extend obliquely 

 down the sides on to the anterior part of 10 ; top of head with a slight 

 orange tubercular elevation on each side of the centre making the head a 

 little bilobed, a nearly continuous black stripe from the outside of base of 

 tubercle down to the eyes, the rest of the head densely mottled with pale 

 lilac and white ; a very slight green tinge over the whole body, especially 

 the venter, which is white with this green tint, the central round black 

 spots on each joint proportionally smaller than before and the thoracic 

 portion only a broken reddish-black stain between the legs ; hairs incon- 

 spicuous, the upper black, the lower gray. Duration of this period seven 

 days. 



After fifth moult. — Length 2.50 inches. Very little change from the 

 preceding stage ; varying from a very pale lilac gray to darker, the pale 

 forms having the piliferous spots and the elevation on joint 9 pale Naples 

 yellow, the darker ones only a little darker of the same shade of yellow, 



