THE CANADIAN ENTOMOLOGIST. 119 



cemented together with a glue-Hke secretion, and within this enclosure it 

 is transformed to a chrysalis of a yellowish white color. Through the 

 partially transparent membrane the limbs of the future beetle are dimly 

 seen, and in due time the beetle bursts its filmy enclosure and emerges to 

 the light of day. 



As this insect affects only old and decaying trees, it seldom does much 

 harm. The use of alkaline washes, applied to the bark of the trees in 

 July, would probably deter these beetles, in common with others, from 

 depositing their eggs on the trees thus coated, and any mischief they 

 cnight otherwise do be in this manner prevented. 



DESCRIPTION OF THE PREPARATORY STAGES OF 

 PAPILIO PALAMEDES, Drury. ( Calchas, Fab.) 



BY W. H. EDWARDS, COALBURGH, \V. VA. 



Egg — Spherical, a little flattened at base ; color greenish-yellow. 

 Duration of this stage four to five days. 



Young Larva — Length .i inch ; near the end of the stage .28 inch, 

 and then cylindrical, greatly thickened from 3 to 6 ; after 6, tapering to 

 12, then thickening to end, the back and sides after 6 a little incurved; 

 2 has a thin square ridge and on each curve of same a thick fleshy pro- 

 cess, longer than others on body, thickly beset with straight hairs ; there 

 are two rows of similar processes, sub-dorsal, smallest on the narrow 

 segments, colored as the segment they stand on, those on 12 and 13 con- 

 siderably larger than any others except on 2 ; besides the subdorsal 

 rows, are two dorsal, running the whole length of body, ard one row on 

 side, another along base ; all these are small, simple tuberculations with 

 hair on end ; color of body brown-yellow marked with white ; a white 

 band, not very clearly defined, especially on its lower edge, passes along 

 the side of segments 3 to 8, turning up on 8 to edge of dorsum, the two 

 extremities there not quite meeting; 12 and 13 are white ; under side 

 greenish-brown ; feet and legs same ; head obovoid, a little depressed at 

 top, smooth, shining, color yellow-brown, a shade darker than body. To 

 ist moult about 4 days. 



After ist Moult — Length .2,^ inch ; same general shape, at first the 



