Appendix. 1 4 1 



and 3 females, all of the form Marcia, and all of the 

 variety designated C, except I female, which was var. 

 B. 3 



EXP. 2. On May i8th the first specimens (3 male 

 Marcia} were seen on the wing at Coalburgh ; i female 

 was taken on the I9th, 2 on the 23rd, and 2 on the 

 24th, these being all that were seen up to that date, but 

 shortly after both sexes became common. On the 26th, 

 7 females were captured and tied up in separate bags on 

 branches of Aster. The next day 6 out of the 7 had 

 laid eggs in clusters containing from 50 to 225 eggs in 

 each. Hundreds of caterpillars were obtained, each 

 brood being kept separate, and the butterflies began to 

 emerge on June 29th, the several stages being : egg six 

 days, larva twenty-two, chrysalis five. Some of the 

 butterflies did not emerge till the 1 5th of July. Just 

 after this date one brood was taken to the Catskills, 

 where they pupated, and in this state were sent back to 

 Coalburgh. There was no difference in the length of 

 the different stages of this brood and the others which 

 had been left at Coalburgh, and none of either lot be- 

 came lethargic. The butterflies from these eggs of May 

 were all Tharos, with the exception of I female Marcia, 

 var. C. Thus the first generation of Marcia from the 

 hibernating larvae furnishes a second generation of 

 Tharos. 



EXP. 3. On July 1 6th, at Coalburgh, eggs were ob- 

 tained from several females, all Tharos, as no other form 

 was flying. In four days the eggs hatched ; the larval 

 stage was twenty-two, and the pupal stage seven days ; 

 but, as before, many larvae lingered. The first butterfly 

 emerged on August i8th. All were Tharos, and none 



3 The reader who wishes to acquire a detailed knowledge of 

 the different varieties of this butterfly, of which a very large 

 number are known, must consult the plates and descriptions 

 in Edwards' "Butterflies of North America," vol. ii.. 



