PHYCIODES I., II. 
Mead obtained eggs on the 27th July and following days, the larvae from 
which all hybernated, that would be the second laying of eggs of the season, 
and the resulting butterflies the first generation of the following year. 
The foregoing Coalburgh observations were supplemented by others in Au¬ 
gust, 1877. Between 14th and 20th, I obtained three lots of eggs, from which 
the larvae in due time emerged. Those of the first all went on to maturity, giv¬ 
ing butterflies after middle of September, the last emerging 26th. But of the 
other two lots all became lethargic. The reason for this difference I could not 
conjecture. It certainly was not owing to any change in the weather. In the 
field the species was abundant from 15th to 25th August (this being the third 
brood of the year). But one month later, when the fourth brood should be fly¬ 
ing, examples were remarkably scarce. In fact, I did not see more than a dozen. 
On 23d, I took one male, two females; one of the last was fresh from chrysalis 
and a fine Marcia, Var. C, such as I take here in the spring. The other two 
were the summer form of the species. On 26th, I took a female and set on as¬ 
ter. She laid about twenty-five eggs and all proved infertile. It would seem, 
therefore, that in this district, part of the larvae from eggs laid by females of the 
third brood, middle of August, hybernate, and that the butterflies of the next 
spring proceed from such larvae only, no larvae of any preceding brood having 
been known to hybernate. But a part of the larvae of this third brood go on to 
maturity and produce butterflies last of September. Some of these may lay fertile 
eggs, but only in a very mild October could the larvae from them mature, or 
their butterflies appear, and the generations could certainly go no further. But 
at the south, in the Gulf States, this fourth brood (there probably the fifth, owing 
to the interpolation of a brood in the spring) no doubt does mature, and its but¬ 
terflies produce larvae which hybernate ; for fresh examples of the butterfly are 
taken in October and November, in Georgia and Texas. Of several received 
from Mr. Boll, taken in November, one was a female Marcia, C, the others 
being of the summer form. There seems to be some tendency to a premature 
disclosure of the winter form in the last months of the year, such as is known 
in case of Colias Eurytheme. The same thing has been noticed in Phyciodes 
Phaon also. 
At Coalburgh, therefore, there are three full generations, the first of which is 
Marcia, the second and third Morpheus, and the larvae from the third in part 
hybernate. But those larvae which go on to maturity produce the fourth gen¬ 
eration of the butterfly, which is a partial one, and practically infertile. And in 
the Catskills, the species is digoneutic, there being two generations annually, the 
first of which is Marcia and the other Morpheus, and a certain porportion of the 
larvae proceeding from the first hybernate, so far as appears, and all those from 
