42 THE CANADIAN ENTOMOLOGIST. 



greenish except for black tubercles. The black line on the dorsum grows 

 more and more broken with each moult until it disappears, except for the 

 black of the tubercles. 



Fall-grown larvte are about 1.75 cm. in length and caterpillar-like, 

 green with black tubercles and a lateral row of yellow spots, prolegs on 

 abdominal segments 2-7 and 10, anal area like body, black, antennse wart- 

 like. Feeds on Salix sericea. 



Head black or dark brown, with the following parts lighter : a small 

 spot on the gense between the ocelli and the post-clypeus, the antennce, 

 the labrum, the labium, and the mandibles and maxillje except for 

 rufous tips. Body green, with the following parts black : a " Y"-shaped 

 sclerite on the venter of the prothorax, two dorsal tubercles and two tuber- 

 cles just above the base of the leg on the prothorax, five dorsal tubercles and 

 two just above the base of the leg on both the meso- and metathorax, also 

 a slight cloud of black on the caudal annulation of both segments and one 

 on the cephalic annulation of the metathorax, on normal abdominal seg- 

 ments five dorsal tubercles, two just above the base of the proleg and one 

 on the proleg itself, a black dot between each pair of prolegs except the 

 anal pair, a spot at the centre of the anal area, and the tips of the cerci. 

 A yellow spot of more or less quadrate outline on every segment of the 

 body except the last two abdominal segments just caudad of the spiracle. 

 Legs greenish-white except for a black tubercle on the basal joint and 

 rufous claws. Cocoon is about .9 cm. in length, double elliptical and 

 spun of dark brown silk. 



Larvae are gregarious edge-eaters, two brooded, the adults appearing 

 in May and July. Spins cocoon below the surface of the ground. 



Phymetocera fumipennis. — Larvee about 1.25 cm. in length and 

 caterpillar-like, body white above and yellow beneath, tubercles black, 

 head black, prolegs on abdominal segments 2-8 and 10, anal area like the 

 body, antennae five-jointed. Feeds on Smilacina racemosa. 



Head dark brown, with the following parts light : the post-clypeus 

 except a spot at the base and one in each depression, the ante-clypeus 

 except a dot in each lateral angle, the labrum at the base, the maxill* 

 except the tips, a spot on the front at the base of the post-clypeus, and 

 the genae below a line passing just dorsad of the antennae. Palpi black 

 except at the joints. Ocelli black. 



Body. — Prothorax yellowish, with five black tubercles in a line above 

 the base of the leg. Tubercles simple. Meso- and metathorax white 



