THE CANADIAN ENTOMOLOGIST. 203 



red and black ; the spines on face yellow or white. Duration of this stage 

 2 to 3 days. 



After 4th Moult. — Length .9 inch ; color deep black, the spines often 

 very red, from deep red bases ; the surface much covered with tubercles, 

 from small to minute, which are partly white, partly yellow, with many 

 red ; the lines red, or red and yellow. In 2 to 3 days becomes full-grown. 



Mature Larva. — Length 1.3 to 1.5 inch; cylindrical, stout; color 

 dull black, with white and yellow and red tubercles on the cross ridges ; 

 and longitudinal lines and bands of red and yellow, varying greatly in dis- 

 tinctness ; when most distinct, there is a band along the basal ridge ; a 

 stripe running with second laterals, an oblique line from base of each first 

 lateral outwards to the front of the segment, and one from front on either 

 side of dorsals also to front of the segment ; when the lines are obso- 

 lescent, the yellow and red tubercles quite cover the surface ; under side 

 black-brown ; spines in seven rows, one dorsal, three on either side, dis- 

 posed as in Comma ; long, slender, tapering, with several branches at top, 

 one being a continuation of the spine, the others arranged about its base 

 somewhat irregularly ; these are of about equal length in the several rows, 

 and others, which are shorter, are found on the sides of the spines, and 

 are particularly numerous on the upper rows of the anterior segments ; the 

 dorsals have 5 main branches, the ist laterals 6, the 2nd and lower laterals 

 4 and 5 ; in most examples the dorsals and ist laterals are red, except on 

 3, where they are red with black bases, and on 11 and 12, where they are 

 usually black, the red being deepest on anterior segments ; the second 

 laterals are sometimes all red, and the lower row is always yellow ; over 

 the feet from 2 to 10 is a simple red spine ; on 2 is a dorsal row of six 

 simple black spines ; spiracles conspicuous, black in white rings ; head 

 obovoid, rather flattened, deeply cleft, the vertices high, and each bearing 

 a stout and short black process, ending in a long spur, with five others 

 about its base, each hair-tipped ; the face covered with simple spines and 

 tubercles, some minute ; on each side below vertex are four long spines, 

 black, the rest are mostly white, each with hair ; color either deep red- 

 brown, or red, about the ocelli a large black patch. From 4th moult to 

 pupation, 5 to 6 days. 



Chrysalis. — Length i inch, greatest breadth .3 to. 3 2 inch ; cylindrical; 

 head case high, compressed transversely, at each vertex a long, conical 

 process ; mesonotum elevated, the carina very prominent, thin, nose-like, 

 more rounded on the anterior side than in Comma, followed by a deep 



