12 THE CANADIAN ENTOMOLOGIST. 



micropyle depressed ; color delicate green, the surface covered with a 

 white lace-work, the meshes mostly rectangular, with raised points at the 

 angles. Duration of this stage 4 days. 



YOUNG LARVA — Length, .04 inch ; onisciform, sub-cylindrical, flat 

 beneath with retractile legs ; the dorsum high, rounded, smooth, shining ; 

 color, pale greenish-white ; on either side of the medio-dorsal line a row 

 of white clubbed hairs, one at the posterior end of each segment ; other 

 similar hairs about base of body ; head very small, obovoid, black, 

 retractile. 



AFTER FIRST MOULT — Length, .1 inch; nearly same shape, the 

 dorsum sloping posteriorly from 4th segment ; the sides sloping ; the seg- 

 ments distinctly separated, rounded ; color, yellow-white or buff; surface 

 pubescent ; head as before. 



AFTER SECOND MOULT— Length, .14 inch; sub-cylindrical; 

 thickest at 2nd and 3rd segments, the dorsum sloping posteriorly ; seg- 

 ments well separated, rounded, the anterior edge of each on dorsum a 

 little depressed ; the 2nd broadened at top and covering the head ; color 

 yellow-white or buff; surface velvety, with a few recurved hairs along dor- 

 sum, others straight at base of body ; the anterior edge of 2nd segment 

 on dorsum fringed with rather Longer and straight bristles. 



AFTER THIRD MOULT — Length, .25 inch ; flattened at base, the 

 dorsum elevated into a rounded ridge, sloping posteriorly ; the last seg- 

 ments flattened and 13 terminating roundly; the sides excavated; the 

 2nd segment compressed transversely, arched at top, bent forward ; color 

 variable, some examples greenish-white, some sordid buff ; on middle of 

 dorsum a dark vascular line ; the dorsum from 3 to 11 pale, and occupied 

 by a series of sagittate spots, each truncated at the next segment ; the 

 whole surface velvety ; head obovoid, dark brown. 



AFTER FOURTH AND LAST MOULT— Length, .36 inch. 



MATURE LARVA— Length, .5 inch. Nearly as at preceding stage; 

 onisciform, flattened at base ; the legs retractile ; the dorsum elevated into 

 a rounded ridge which slopes back from 6th segment ; the sides deeply 

 excavated, and on middle of each segment from 3 to 1 1 a vertical nar- 

 row depression ; the last segments flattened, the last of all terminating 

 roundly, its sides narrowed and a little incurved ; the 2nd segment flat- 

 tened, arched, bent nearly flat over the head ; the dorsal ridge is of a 

 tubercular nature, standing on the body, and on each segment from 3 to 



