218 THE CANADIAN ENTOMOLOGIST. 



After 4U1 Moult — Length i inch ; stouter, more tapering either way ; 

 the ground color buff; a broad buff band covers the middle of dorsum, 

 enclosing a macular black line ;. markings nearly as before ; the tubercles 

 and base of spines mostly orange. To next moult 20 days. 



After 5th Moult — Length 1.2 inch ; 15- days after the moult the larva 

 reached maturity. 



MATURE LARVA — Length 1.75 inch; cylindrical, obese, tapering 

 from middle to either end ; furnished with six rows of tapering, fleshy 

 spines, mostly somewhat recurved ; those of the two dorsal rows, on seg- 

 ments 6 to 10, largest ; the two dorsal spines on segment 2 shorter, about 

 equal to those on 13, and directed forward ; all these silvery-white with 

 black tips ; the spines of the lateral rows smaller, yellowish, those of the 

 lower row orange at base and half way to top ; of the upper lateral row 

 part are orange and at base only ; from each spine proceed several short, 

 straight, fine black bristles ; color of body velvet-black, banded and striped 

 with ochrey-yellow, changing to dull orange or red ; on middle of dorsum 

 a broad band enclosing a macular black line, sometimes obsolete ; at the 

 base of body a darker band ; at the junction of each pair of segments 

 three narrow transverse stripes ending at the lower band ; each of the 

 oblong black spaces on either side of dorsum crossed by short 

 yellow stripes ; the last segment wholly yellow ; spiracles oval, black in 

 white rings ; under side olive-brown ; legs black, pro-legs smoky-brown ; 

 head rather small, rounded, flattened frontally, bilobed, the vertices 

 rounded ; somewhat pilose ; color reddish-ferruginous on upper half, black 

 below. Twenty hours after suspension made chrysalis. 



CHRYSALIS — Length 1.1 inch ; general shape as in the allied 

 species ; much compressed laterally, the wing cases very prominent and 

 flaring at the base on ventral side; head case nearly square at top, com- 

 pressed and excavated on the sides, with two small ocellar prominences ; 

 mesonotum rounded, a little carinated, followed by a deep rounded exca- 

 vation ; abdomen tuberculated, the two dorsal rows extending to meson- 

 otum ; color brown and yellow over abdomen ; the mesonotum pinkish- 

 brown ; the wing cases brown and more decidedly tinted pink ; each 

 dorsal tubercle shows a large dark patch on the anterior side ; similar 

 patches on the wing cases ; the tubercles on mesonotum black, and each 

 is joined by a black band to a patch back of and near the base ; about 

 the head case several irregular dark or black spots ; on the wings a brown 



