44 • THE CANADIAN ENTOMOLOGIST. 



figure shows the beginning ,of the case, and a third the completed case, 

 and this last is best of the three. The pupa is better than the larva, but 

 does not give the pretty green hue of nature. I intend to give a more 

 satisfactory Plate of all the stages in Vol. 3. 



By the kind aid of Prof. Rowley, of Curryville, Mo., I was able to 

 follow the history from the egg, in 1887. Mr. Rowley not only sent eggs 

 at different times, beginning with 15th May, and larvae of all stages of 

 growth and pupae so late as August 1, but kept me supplied with the food 

 plant, Croton capitatum. The eggs are laid on Croton monanthygnum 

 also, and these are the only plants known to Mr. Rowley. They are laid 

 usually singly on the under side of the leaf. The young larva, soon after 

 emerging, constructs for itself a perch on which it rests, after the manner 

 of a Limenitis. It is at the tip of the leaf, made by eating away along- 

 side the mid-rib, and using this rib as the base, covering with silk and 

 lengthening by chewed bits of leaf bound and held by the silk. One 

 perch in first stage measured .28 in length, and on it the larva rested with 

 the anterior segments arched, only the pro-legs furnishing the support. 

 But if there be two larvae on one leaf, the second perch may be made 

 anywhere at the side. After the first moult the perch was lengthened 

 and made heavier by binding it with larger pellets, so that it looked like 

 a string of .knobs, and the greatest length I observed was .4 inch. The 

 young larva bears much resemblance in body and head to young Limen- 

 itis Disippus, but is more like that larva at second stage than the first,, 

 and the head with its many tubercles and processes on vertices and at 

 back still more resembles either second or third stage of Disippus than, 

 the first. 



After the second moult, the perch is deserted, and a case is made by 

 covering the upper surface of the leaf with silk, and bringing the edges 

 together. The larva lies at first quite concealed, and eats the base of the 

 leaf. Here the next moult takes place, and the larva then builds a new 

 case, and goes outside to feed, after the habit of the nearly mature Papilio 

 Troilus. By the time the fourth moult approaches, the larva is as long as 

 the case, and the head will be exposed at one end and tail at the other, 

 the rounded case being a pretty good fit, rather loose. When in suspen- 

 sion, the attitude is almost circular, and both ends meet and touch. The 

 pupa is often found, Mr. Rowley tells me, attached to a branch of the 

 food plant. There are at least two broods of the imago, and it is the 



