THE CANADIAN ENTOMOLOGIST. 63 



from each spring four hairs, separated at their bases, turned forwards and 

 downwards ; on 2, 3, 4 is a demi-row, mid-lateral, of similar but smaller 

 and flattened tubercles, each bearing three hairs ; lower down, and just 

 below spiracles, on 4 to 13, are 2 hairs to each segment, from little tuber- 

 cles not in line, but placed obliquely, so that the posterior tubercle is 

 always a little above the other ; along base, over feet and from 2 to 12, are 

 2 fine and short hairs to each, near together, turned down ; some larvae 

 have all the large tubercles black, others have them light gray ; the hairs 

 are all light but black at base ; under side and prolegs greenish-brown, the 

 feet black ; head obovoid, long, broader than high, depressed at top, the 

 vertices rounded ; black, the surface rough, with many fine black hairs ; 

 the larva from the first is able to project its tentacles, very short, pale 

 brown-yellow, and so far as observed not bifurcated. Duration of this 

 stage from 11 to 15 days. 



After First Moult. — Length at 24 hours, .18 inch; shape as in first 

 stage ; color velvet-black, the lower part of side and under side greenish- 

 brown ; the processes on body are much as at first stage, but instead of 

 single hairs from minute tubercles over dorsum, there are now four rows 

 of small glossy black flattened tubercles, placed just as were the others 

 mentioned, namely, two straight cross rows on 2, one row on 3, 4 each, in 

 all these four in the row ; in the following segments two cross rows each, 

 two tubercles to the row, on front and rear, the former near together, or 

 dorsal, the latter more separated and sub-dorsal ; each of these tubercles 

 bears four short hairs, separated at their bases ; the upper lateral tubercles 

 are large, rounded, flattened, running from 2 to 12, and bear from six to 

 eight hairs ; the demi-row on side of 2-4 is nearly in line with the tuber- 

 cles below spiracles from 5 to 13, and this may be considered as a con- 

 tinuous lateral row, the lower lateral ; on 2-4 there is a single tubercle to 

 each, size of the dorsals, but the succeeding segments have two each, 

 smaller, close together, the posterior one of the pair always a little higher 

 than the other ; the first three have five hairs each, the rest four, except 

 on 13, where the tubercles are very small, and bear one or two hairs only ; 

 the hairs vary in length on each tubercle over the body, and in addition 

 there are scattered hairs from the surface everywhere ; on the dorsum of 2 

 the interior tubercles coalesce and are enlarged, and the hairs therefrom 

 bend forward over the head ; from 2 to 12 inclusive, in line with the upper 

 lateral tubercles, on the posterior part of each segment, is a deep yellow 

 oval or rounded spot ; and on dorsum, between and in line with the sub- 



