THE CANADIAN ENTOMOLOGIST. 19 



to day this larval cannibalism continued to enable a number of individuals 

 to transform into the second stage. When the chrysalis was not at once 

 removed it would soon disappear, excepting only the outer case. Some- 

 times 3 or 4 larvae would attack a suspended larva at the same time, and 

 whenever a dismembered portion of the victim fell to the bottom of the cage 

 other larvae would seize and devour it. A dozen larvae and as many 

 chrysalids were eaten up in four days, and not even the skin of a larva 

 would remain. Thermometer ranged from 8o° to 92 in the shade, but 

 no sign of decomposition was noticeable in cage. It was dog eat dog, and 

 not even bones left to tell the tale ! 



July the 1 6th only nine larvae were left, and two chrysalids transformed 

 the previous day were in an unsightly condition— literally disemboweled. 

 All of these larvae were very lively, but whenever ready to transform would 

 never be more than two-thirds the size of those naturally fed. One more 

 unfortunate hung byits anal feet to become thenext victim in order. July the 

 1 9th three larvae were alive, of which one was "spinning the thread of life". I 

 again placed 8 or 10 kinds of food plants in the cage, which in twenty- 

 four hours were untouched. One chrysalid was left intact. I now placed 

 the remaining two larvae on my Aristolochia vines, inasmuch as a new 

 growth of leaves was in sight. These immediately fed upon the tender 

 food offered. A number of others, barely alive, were nibbling away at 

 the bare vines lower down on the plants, and had not yet discovered the 

 new foliage. 



Altogether these were a most carnivorous lot of larvae, from which I 

 obtained only five chrysalids out of a possible twenty-five larvae retained 

 in that cage. From one of these emerged, in September, a $ imago of 

 the normal colour, but smaller in size. 



I am not aware that larvophagous caterpillars have been reported as oc- 

 curring among Rhopalocera. In the American Naturalist, Vol. XX., page 

 556, it is stated that a Lycaenid larva of Feniseca tarquinius feeds upon an 

 Aphid which is found only on the branches of alder (Aluus serrulata) 

 affecting swampy localities. One of my liberated Philenor larvae fed upon 

 a cultivated plant of Azalea indica, which was a potted plant fifteen 

 inches in height. I discovered the chrysalid in September, and this was 

 the only exception as far as I could discover where these had not fed 

 either upon Aristolochia sipho or their own kind. 



