46  THE CANADIAN ENTOMOLOGIST. 



Aug. i6. — The younger (No. 2.) moulted. There is a marked differ- 

 in the coloring of the two examples. This one has the yellow spots cir- 

 cular in outline, and quite insulated, centrally, on the black bands ; but 

 No. I has the spots of oblong shape, and placed ujyon the front edge of 

 the black bands, interrupting it. 



Aug. 21. — In Peters' garden I found, on the parsnip leaves, two more 

 Swallowtail caterpillars, larger than my largest (Nos. 3 and 4). 



Aug. 22. — My No. I is hanging, back downward, from the roof of its 

 cage, a silken band round its body, and its tail fastened to a knob of 

 white silk. In the evening No. 3 suspends itself in like- manner. 



Aug. 23. — This morning I was so fortunate as to see the process of 

 No. 4 putting the already spun silken girth over his head, and adjusting 

 it around his shoulders. 



Aug. 24. — No. I went into chrysalis during the forenoon. It is large 

 and rough of surface, of a yellowish pink hue, green in some parts, marked 

 with a broad streak of sooty brown down the back, and one down each 

 side of the abdomen. 



Aug. 25. — This morning I saw that No. 3 had already become a chry- 

 salis. About 5 p. m., I witnessed, with great pleasure, the whole process 

 of the evolution of another chrysalis, my No. 4 — the one whom I had seen 

 put on his necktie. This caterpillar appearing uneasy and restless, I 

 watched it at intervals for about half an hour ; when, by strong and ap- 

 parently painful distension of the part, a slit was made in the skin, down 

 the back of the third ring. Through this the soft chrysalis forced itself, 

 gradually extending the slit itpwards, till the head was divided and 

 separated ; and also dow?izoards, for several rings' length. The skin was 

 now gradually pushed down. I had been curious to see how the creature 

 would get through this part of the business, for its weight pressed the 

 silken girth very tight around the body. There seemed, however, no real 

 difficulty ; I thought it kept itself, b}- muscular effort, from pressing its 

 whole weight on the girth until the skin had passed the part. As soon as 

 it was pushed down to the extremity, the tail of the chrysalis was thrust 

 out beneath, \ery cleverly, and pushed upward to take hold of the little 

 knob of silk. ^Vhen this was done, the old wrinkled skin was jerked off, 

 and cast away, by the writhing of tlie pupa. The silken girth was now 

 encircling the body, between the sixth and seventh rings ; but the chrysalis 

 twisted and turned, till it got the girth three rings nearer the head, namely, 



