THE CANADIAN ENTOMOLOGIST. 9Y 



narrow, almost linear on tlie intermediate ones ; on tlie tenth segment the 

 green eneroaclies on the rose color on sides of body, extending more than 

 half way into the segment ; behind the tenth segment the body is rose color 

 with a dorsal streak of a darker shade ; the rose color at each extremity is 

 united by a rosy line along each side close to under surface. 



Under surface dull green with a yellowish tint; feet and prolegs yellowish- 

 green. 



June 24th.. The larva was now about full grown. Length 0.70 in , width 

 about 0.20 in. 



Head very small, bilobed, black and shining, with a streak of dull white 

 across the front above mandibles; mandibles reddish-brown. 



Body above dull green, with a yellowish tint especially on anterior seg- 

 ments, thickly covered with very short brown hairs, scarcely visible without 

 a magnifyer, — these hairs arise from small pale yellowish dots which appear 

 slightly raised. A dorsal streak of dark green arising from the internal 

 organs showing through the semi-transparent skin from second to fourth 

 segments inclusive. A patch of dull pink or rose color on anterior segments, 

 faint on second segment, covering but a small portion of its upper surface ; 

 nearly covering the dorsal crest on third, and reduced again to a small faint 

 patch on fourth ; on posterior segments is a much larger rosy patch, extend- 

 ing from the hinder part of ninth segment to the end of body, — the hinder 

 part of ninth segment is merely tinged, on tenth it is enlarged to a considera- 

 ble sized patch widening posteriorly, and behind this the body is entirely 

 covered with rosy-red. The sides of tenth segment close to under surface 

 have a streak of the same color, and there is a faint continuation of this on 

 ninth segment. Second segment smaller than third. A wide dorsal crest or 

 ridge from third to tenth segments inclusive, behind this the body is suddenly 

 flattened, sides of body acutely sloped from dorsal ridgë to under surface. 



Under surface yellowish green, with a few very fine brownish hairs ; feet 

 and prolegs greenish, semi-transparent. 



I found that the larva fed readily on plum leaves, indeed seemed to prefer 

 them to cherry, so I reared it on this. 



June 29th. — The larva fastened itself to the lid of the box in which it had 

 been fed, changing to a chrysalis July 1st. 



Chrysalis described July 3rd. Length 0.45 in., greatest width 0.20 in. 



Body pale brown and glossy, with many small dark brown or blackish dots 

 distributed over the whole surface, thicker along the middle above, appearing 

 as a faint imperfect ventral stripe from seventh to eleventh segments ; surface 

 thickly covered with very short brown hairs, invisible without a magnifyer. 



The imago was produced on the 13th of July, a fine 9 Mopsus. 



1 was much surprised when this specimen proved to be Mopsus. Boisdu- 



