THE CANADIAN ENTOMOLOGIST. 85 



piliferous tubercles and is faintly bordered with yellow. Spiracles pale 

 ochre ; venter paler, whitish, with a purple medio-ventral line on the 

 eighth to the tenth abdominal segments. Feet concolorous with the 

 body. As the stage advances some small brown spots appear on the 

 sides. 



Fifth stage: Head rounded^ flat in front, the clypeus a little 

 depressed, with two vertical ridges below ; colour purplish brown, the 

 little yellowish spots arranged as before j clypeus and mouth reddish, 

 jaws black outwardly ; antenna^ reddish, their bases yellow ; ocelli black ; 

 the lateral posterior part of the head pale yellow ; width 3.6 mm. A few 

 hairs. Body shaped as in the previous stage, the cervical horns present 

 but small, smooth, punctured at the ends, projecting laterally in line with 

 the cervical shield. Tails tuberculated, each tubercle with a fine spine ; 

 1 1 mm. long ; extensile threads black with a white ring, yellowish at 

 base. Body pale whitish-yellow, becommg pale lemon-yellow, the dorsal 

 band ferruginous-brown, shaped as before. On the cervical shield it is 

 marked like the head and bisected by a narrow pale dorsal line ; it 

 covers the upper part of the cervical horns, passes below the spiracle on 

 the fourth abdominal segment, narrows to a minimum on the eighth 

 abdominal segment (where it is thrice as wide as on the metathoracic 

 segment) and ends elliptically, covering the anal plate. It is edged with 

 blackish brown and contains a diffuse dorsal and three oblique lateral 

 bands of the same colour, posterior to the latter of which are faint 

 yellowish mottiings. In the lateral angle of the band is also a blackish- 

 brown shade. Tails concolorous, twice annulated with pale yellow. On the 

 lateral region are a {q.\} minute hairs and some faint brown spots. Spiracles 

 ochre in a very narrow brown border, and obscurely surrounded by brown 

 clouds. A series of subventral blackish-brown spots and a medio-ventral 

 line posteriorly. Thoracic feet brownish testaceous ; abdominal feet pale 

 yellow. The erect spines at the anus are black. Length of larva, 

 exclusive of the stemapods, 22 mm. As the stage advances the dorsal 

 band becomes paler, the cervical shield pinkish, and the markings are 

 more distinct. 



Cocoon : Like those of the other species of Cemra, but rather flatter 

 for its size. Length 38 mm.; width 11 mm.; height above the surface of 

 the wood 6 mm. 



Fupa : Cylindrical, flattened a little on the ventral side, the ends 

 rounded, not tapering ; cases prominent, those covering the antenna? 



