SEASONAL CHANGES AND HISTORIES. 129 



although the butterflies produced from these eggs 

 do not appear until the latter part of June, or 

 only a little earlier than the Banded Hair-streak, 

 and lay their eggs in July, these eggs hatch at 

 once, and the caterpillars mature so rapidly that 

 a new brood of butterflies appears by the middle 

 or end of August, and lays its eggs during Sep- 

 tember ; and it is this second brood of eggs which 

 passes over the winter. 



The Brown Elfin (Incisalia Augustus) [Fig. 123] 

 hibernates in the chrysalis state and, as might 

 be expected, the butterflies 

 appear early in spring ; in- 

 deed this species is one of 

 our earliest, flying toward 

 the end of April or very 

 early in May ; by the end 



of May the butterflies, with 



rare exceptions, have disappeared ; the eggs hatch 

 at once, and the caterpillars probably attain ma- 

 turity in the latter part of June, change to chrys- 

 alis and remain in this condition throughout the 

 hot season and until the following spring. Like 

 the Banded Hair-streak, this insect is single- 

 brooded, but it hibernates as a chrysalis instead 

 of as an egg, and passes the hot season as a chrys- 

 alis instead of being then at the height of its 

 metamorphoses ; the case, which is not an isolated 

 one, is the more strange since warm weather ap- 



