APATURA I. 



forked ; color yellow-green dorsally, blue-green on the sides ; the whole surface 

 granulated, owing to minute tubercles on the sides and larger and irregular 

 ones on the back ; these last arranged in transverse rows, separated by deep 

 creases, there being four rows to each segment ; on either side of the dorsum 

 a clear yellow line from head to end of tail, and between these a less distinct 

 pale stripe, on which is set an oval yellow spot on the anterior end of each seg- 

 ment ; often this stripe is wanting, and the yellow spots only appear ; on the 

 side a pale yellow wavy line and an infra-stigmatal straight line ; under side 

 and legs blue-green ; head sub-quadrate, longer than broad, punctate, covered 

 with minute tubercles, green, with four pale vertical stripes upon the front ; 

 mandibles and ocelli brown ; horns small, yellow-green, each furnished with two 

 short terminal j^rongs, which are tipped with brown ; other small prongs about 

 the middle of the horns and at base, and along the top of the head, and three 

 at sides of head. (Figs, g, g^.) Duration of the larval stage about twenty days. 



The hybernating larva? at maturity differ from those described above princi- 

 pally in that the yellow spots of the dorsum have disappeared, and given place 

 to a longitudinal yellow line, making three similar lines on a dark green ground, 

 the inner edges of the two exterior lines being whitish ; the color of the whole 

 body is greenish-yellow. (Fig. A.) 



Chrysalis. — Length .85 inch ; compressed laterally ; the outline of the 

 under side convex, regular ; the abdomen prominent dorsally, much arched, 

 sharply carinated, the anterior edge of each segment on the keel produced and 

 clubbed (Fig. _;') and marked on either side by a shining black dot ; the last 

 segment terminating in a long bifurcated pad of booklets (Fig. Z:.) ; the thoracic 

 segments depressed at an angle of forty-five degrees from the end of the keel, 

 the sides excavated in the direction of base of wing ; mesonotum angular, 

 rounded somewhat at summit ; the head case produced, sub-conic, the palpi cases 

 prominent, pointed ; color either delicate yellow-green or blue-green, finely 

 specked with pale yellow over the whole surfiice ; the neuration of the wings 

 distinct ; a yellow line passes along the keel and to the mesonotum, at which it 

 forks to the palpi cases ; another passes along the posterior edge of the wing 

 case, and is joined by an undulating line ujjon the side of the abdomen. Dura- 

 tion of this stage, from seven to eight days. Total from egg to imago about 

 tliirty-one days. 



Several of the larvfe of the first summer brood raised by me, in 1873, stopped 

 feeding after the second moult, and commenced their hybernation. Some com- 

 posed themselves on the leaves in the glass in which they were kept, others di- 

 rectly on the sand at the bottom of the glass, in either case upon a coating of 

 silk. The color of these larvse soon changed to brown, in which was to be seen, 



