294 
Psyche 
[December 
early July swarmed in all wet grassy places more or less protected 
by woodlands, and for the abundance of Feniseca tarquinius in 
correlation with the unusual abundance of its host ( Schizoneura 
tessellata.) 
The summer of 1924 was marked by the appearance of 
Vanessa cardui in great abundance and an increase in the num- 
bers of V. virginiensis, together with an abrupt decrease in the 
numbers of nearly every other butterfly except Anosia plexippus , 
especially those types like Argynnis , Brenthis, Satyrodes, Epidemia 
and Feniseca which live in moist localities. 
In 1925 Vanessa cardui was absent and V. virginiensis very 
scarce. In early July Papilio glaucus was unusually abundant, 
so numerous indeed that I counted more than twenty at one 
time about a single patch of milkweed in Essex. All the fritillaries 
were unusually abundant except Speyeria idalia , which was 
scarcely so numerous as in the preceding year, though still quite 
common. Hair-streaks and blues, as in 1923, were very common. 
A curious feature of the year was the great scarcity of Anosia 
plexippus which had been abundant in the two years preceding; 
not over half a dozen were seen in the course of the whole summer, 
and no larvae were found. 
Argynnis atlantis Edwards. 
Essex: Bog off Conomo street, August 24, 1924, one female 
(A. H. C.); July 12, 1925, one female (A. B. J. C.); July 22, 1925, 
one male (A. H. C.); August 9, 1925, one female (A. H. C.). 
Milkweed patch on Conomo street, July 9, 1925, one reported 
(A. B. J. C.); July 10, 1925, remains of a female found on the 
ground (A. H. C.); August 9, 1925, one male (A. H. C.). 
Apparently this butterfly is resident in this region. All the 
specimens seen were caught, though one was subsequently lost. 
It is easily distinguished from A. cybele and A. aphrodite both 
when on the wing and when resting. The preponderance of 
females among the captures was undoubtedly due to the lateness 
of the season. 
