1864.] 417 



might have been ichneumonized, or the larger ones might have spun up, or they 

 might have been killed by some of the other larvae in the cage, which, accord- 

 ing to Rev. Mr. Green in his book on " Pupa-digging" is not an unusual circum- 

 stance with certain lepidopterous larvse, or I might possibly have thrown them 

 out by an oversight in changing the leaves; but they could not have escaped 

 through tlie wire-gauze. 



Breeding-cage No, 5, Food-plant bass. This, like all the following ones, 

 contained over a cubic foot of space, with the sides and top of musketo-bar, so 

 that occasionally larvaj would make their escape from it by boring through the 

 musketo-bar. There was no earth at the bottom, and only 3 or 4 other larvpe 

 in it, besides the Antiphola. 



Sept. 5. Placed in it three J-grown Antiphola taken off the oak, all lively. 



Sept. 6. Added three more Antiphola taken off the oak, two i-grown and one 

 j-grown, all in good order. 



Sept. 9. Shifted. Found 3 Antiphola ; the other 3 had disappeared, and 

 their bodies were nowhere to be seen in the cage. The leaves had partially 

 dried up. 



Sept. 10. Found only one Antiphola ; the other two had disappeared. 



Sept. 11 — 27. The same Antiphola throve and grew finely. Sept. 28 it quit 

 feeding and shed its pencils and by Sept. 30 it had spun up. 



I believe the 5 missing Antiphola in this cage escaped through the musketo- 

 bar, as I found a stray one at large in the room where I keep my breeding- 

 cages on Sept. 3, and two stray ones on Sept. 10. Tliey certainly did not die in 

 the cage, for every time that I shifted the leaves in all the cages but No. 1, I 

 searched carefully for any dead larva;. 



Breeding-cage No. 4, Food-plant sj/camore- Tiiere was no earth at the bot- 

 tom of this cage, but there were a dozen or two very restless notodoutide larvse 

 in it, that were continually boring through the musketo-bar and escaping. 



Sept. 1. Placed in it two lively J-grown Antiphola, one taken off the oak 

 and another off the elm or possibly the oak. 



Sept. 2. Added 3 lively Antiphola taken off the oak, one i-grown and two 

 J-grown. 



Sept. 3. Returned a stray Antiphola, which must have escaped from this 

 cage, as at this date I had no Antiphola in any other cage. 



Sept. 4. Shifted. Found two living i-grown Antiphola, one of which had 

 just moulted, and found also one dead. Two must have escaped, for their bodies 

 were not to be found. Added from Cage No. 1 the abnormal oak-feeding Anti- 

 phola referred to above, (p. 414) which had now acquired black pencils. 



Sept. 5. Added three lively j-grown Antiphola taken on the oak. 



Sept. 9. Shifted. Found three lively Antiphola, and also one half-dead and 

 one DEAD. One must have escaped. 



Sept. 10. Shifted. Found three living .i4?i<ipAo/a,- the half-dead one was now 

 completely dead. Three hours after shifting found three stray Antiphola in the 

 room, which had apparently escaped from the cage, and replaced them. In 

 order to identify them, however, I clipped off the tips of their right pencils. 



Sept. 11. Noticed one of the clipped Antiphola was half-dead. 



