136 THE CANADIAN ENTOMOLOGISl. 



Stage II. — Head black. Body red-brown with greenish interseg- 

 mental tinge ; no trace of markings. Tubercles black, I minute with 

 single white seta, II large, with about 5 black setae, those of the posterior 

 segments being longest and inchned backward. III with 3 or 4 black 

 sette, IV and V each with 3 small white outwardly inclined setse. Thoracic 

 plate semilunate, black, with a double row of four setœ. Length, 6 mm. 



Stage III. — Head black. Ground colour greenish gray heavily mot- 

 tled with dark brown and with lateral central portions of segments broadly 

 reddish orange, giving the general appearance of a reddish-orange ground 

 colour, the true ground colour being only apparent intersegmentally and 

 dorsally. A dorsal series of orange diamond-shaped patches, more or less 

 concealed by a thin line of the same colour. These patches are not 

 prominent, being similar in colour to the lateral orange shading ; they are 

 most recognizable immediately following the moult, when the lateral 

 colour is not so developed. Tubercles black with considerable increase 

 in the number of setae. Length, 9 mm. 



Stage IV. — Head black. General appearance much darker than in 

 preceding stage. Body gray-green with dark brown marbling ; dorsal 

 deep-orange stripe more prominent ; lateral orange shading considerably 

 reduced, being confined mostly to the base of the tubercles ; these latter 

 shiny black with numerous black setse, except V and VII which still bear 

 white ones. Spiracle black, prolegs reddish. In late stages the colour 

 becomes paler and the lateral orange markings are again plain. 

 Length, 12.5 mm. 



Stage V. — Head and body jet black with large shiny black tubercles 

 which show a great increase in setae ; these are barbed, but not nearly so 

 prominently so as m phyllira. A broken dorsal reddish stripe is present. 

 Prolegs reddish ; stigma black. Length, 22 mm. 



Stage VI. — Scarcely any change from previous stage ; rather blacker, 

 dorsal stripe often lacking, when present much broken into spots of red- 

 dish orange ; tubercles very shiny and large. Length, 30 mm. 



Stage VII. — This final stage has already been described by us. 

 (Vide Can. Ent., XLIII, 259.) 



The resultant imagines showed but little variation ; in one 9 there 

 was a slight indication of the W mark due to a few light dots in the sub- 

 terminal area ; in most specimens^ however, the tendency was to a reduc- 

 tion rather than an increase of the light markings of primaries. The $ s 

 agreed well with the figure published with the above mentioned article. 



(To be continued.) 



