PAPILIO III. 



On loth Oct., I had several larvae feeding. Of these but one went to chrysa- 

 lis before frost killed the leaves of the food plant and caused the loss of the re- 

 mainder. This one yielded Telamonides ?, 15th April, 1871. 



These observations therefore shewed that from Telamonides came Ifarcellus the 

 same season and Telamonides in the following spring, that from llarcellus came 

 successive broods of Marcellus the same season, and from the last brood Tela- 

 monides in the S23ring. 



It also appeared that while there was a general limit to the duration of the 

 chrysalis state, namely about 12 days, there were frequent exceptions, the images 

 then emerging at irregular periods and some of nearly every brood living in chrys- 

 alis till the following spring. 



The rapidity of growth from the egg was surprising, as compared with our other 

 Papilios. In 1869, by obtaining very young larvae within a day or two after I 

 had had butterflies emerge from chrysalis, I became satisfied that, besides the first 

 brood from Walshii or Telamonides, there are three successive broods of 3Iarcellus 

 and the larvae of the fourth give chrysalids that go over the winter, thus making 

 five broods per year. 



These observations failea lo determine the connection between Walshii and 

 the other two forms, though I had good reasons for feeling confident as to what 

 that connection might be. For example, from twenty-seven chrysalids obtained from 

 larvae found on the food plant in Sept. 1868, and which it is now plain must have 

 come from the last brood of Marcellus, emerged twenty-seven imagos between the 

 2d and 21st Ajjril, 1868. Of these, twenty-six were Telamonides, and one was Wal- 

 shii. Also from chrysalids of Sept. 1869, emerged two var. Abbotii in March, 1870. 



Out of fifty-seven chrysalids from larvte found on food plant in last of June 

 and 1st of July, 1868, which were probably from first brood of Ifarcellus, forty- 

 five produced llarcellus within the usual period; but five went over the winter, and 

 between 24th March and 8th Ajiril, 1869, yielded five Telamonides. Another 

 larva fed in August, 1868 (2d or 3d brood of llarcellus) produced Telamonides 

 23d March, 1869. 



In the spring of the present year, (1871) Walshii was unusually abundant 

 and it seemed to me, at the expense of Telamonides, which was comparatively 

 scarce. On the 10th April, I confined three Walshii with the food plant, and by 

 12th, had obtained one-hundred and twenty-five eggs. On the 16th, I confined 

 two others of same type separately and obtained many more eggs. The larvae from 

 the last laying overtook in growth those of the first so that but one' day intervened 

 between the first chrysalis of each. Between 17th and 23d May, all the survivors had 

 changed, numbering seventy. From these emerged, between 1st and 6th June, 

 fifty-eight butterflies, of which 22 S, 34 2, were Marcellus, one i, Walshii and one 



