148 THE CAXADIAN ENTOMOLOGIST. 



from three larvne taken on the 1 6th of June, one has been successfully 

 brought through its various stages, and proves to be iiltronia. 



The following description was taken at the time of its capture, when 

 it was nearly full grown. 



Length 1-60 inches, onisciform. 



Head medium sized, flattened in front, slightly bilobed, dull bluish 

 grey, with the front flattened portion margined with a purplish-black 

 stripe. Under a lens the surface appears thickly dotted with pale and 

 dark colored dots and streaks, with a few short, pale, scattered hairs. 



Body above dark dull grayish brown, appearing under a magnifying 

 power thickly studded with brownish dots on a paler ground. Second 

 segment a little paler than the others. A sub-dorsal row of dull reddish 

 tubercles, one on each segment from second to fourth inclusive, but 

 behind this there are two on each ring to the twelfth segment inclusive, 

 the anterior one being the smallest, while the posterior and largest tubercle 

 is more decidedly red, all encircled with a slight ring of black at their 

 base. On the ninth segment above there is a prominent, nearly upright 

 stout, fleshy horn, about one-twelfth of an inch long, pointed and similar 

 in color to the body, but \vith an irregular grayish patch at each side. On 

 the twelfth segment the two hinder tubercles are somewhat increased in 

 size and united by a low ridge, tinted behind with deep reddish brown ; 

 there is also an oblique stripe of the same color extending forward from 

 the base of the tubercles to near the spiracle on this segment. The 

 terminal segment is flattened and has a number of small pale reddish and 

 blackish tubercles scattered over its surface. In front of each of the 

 smaller sub-dorsal tubercles, from fifth to twelfth segments inclusive, there 

 is a dull white dot, and one also of a similar character in front of each of 

 the spiracles along the middle segments of the body ; from each of the 

 tubercles throughout there arises a single dark short hair. Spiracles 

 large, oval, dull grayish, faintly encircled with black. Along the sides 

 of the body, close to the under surface, is a thick fringe of short, fleshy 

 looking hairs of a delicate pink color. 



The under surface is also of a delicate pink, of a deeper shade 

 along the middle, becoming bluish towards the margins, with a central row 

 of nearly round, velvetty black spots, which are largest from the seventh 

 to the eleventh segments, inclusive. The anterior segments are greenish 

 white, tinted with rosy pink along the middle, with a dull reddish spot at 



