262. POLYMORPHIC BUTTERFLY. 
from larvæ of Telamonides hang from eleven to fourteen days, and 
the time for the completion of their entire cycle is only from thirty — 
to thirty-seven days, which is seldom exceeded by Marcellus: — 
(twenty-seven to thirty-eight days), although much quicker than 
the period of Walshii (forty-three to fifty-one days). 
The female of the first brood of Marcellus commences to lay eggs _ 
— which, like those of Telamonides, hatch in four or five days—at 
the very beginning of June, and butterflies produced from them, i 
i. e. the second brood of Marcellus, are upon the wing early in 
July—not only before the butterflies of the previous brood — 
have disappeared, but even before all the chrysalides from eggs of ; 
Telamonides have eclosed their butterflies; the attempt to trace a 
the sequence of the broods is, therefore, almost hopelessly bewil- : 
dering ; but it seems probable that the second brood of Marcellus 
(the third of Ajax) appears in abundance early in July; it is, 
perhaps, in speaking of the first brood of Marcellus in Alabama, 
that Gosse says they are “nearly all gone July 1st.” These larve — 
attain their growth in from twelve to nineteen days, and hang as 
chrysalides from eleven to fourteen, and it is therefore impossk — 
ble that there should not bea third brood of Marcellus; that — 
fourth brood is even at times possible would appear from the fact 2 
that the insects continue to change from one stage to another : 
without any apparent regard to the approach of winter, which 
overtakes many in conditions under which they are obliged to 
succumb; thus Mr. Riley writes from Missouri: «I have found 
eggs and larve two-thirds grown, as late as the middle of October, a 
when the leaves were almost all fallen ; the parent ought to know 
better if instinct. is.so infallible.” Doubleday remarks that 02 
the Ohio the species was very numerous after the tenth of ie 
tember ; if this is an indication of a new brood in September; | é 
if the second brood of Marcellus appear early in July in this locality 
also, then the butterflies seen by Doubleday must have been s 
fourth brood of Marcellus, or the fifth of Ajax. I do not : 
there is another instance on record of a five-brooded butterfly. 
The results reached by Mr. Edwards in his study of this i 
fly have recently been the subject of some curious com pe 
each other) eclosed the butterflies between June 1st and 6th, yet “ on 23d sone fi 
Be oe eo Me ee eg Ae? Al ep nach eM 
owed on the 
weeks after its period, came another 9 Marcellus and a second eee of 
12th of July;” but even the latter date is only three days after that of OU romi 
to butterfly, 
$ 
