344 A. EF. Verrili—The Bermuda Islands. 756 
Miss VY. Hayward. A detached head of the former was also found 
with its jaws still firmly grasping the leg of a hard-back beetle. 
Native of Madeira. Figures llla, a, 6. A much larger, chestnut- 
brown, winged female, 6™" long, of this genus (t. Ashmead) was 
also sent in November. | 
Odontomachus Latr. (sp.). A jumping ant of the family Formi- 
cide, near O. insulans of the West Indies.* 
J.—Lepidoptera. (Butterflies; Moths.) 
Among the most conspicuous of the introduced insects are several 
species of North American butterflies. Some of these may also have 
been indigenous, for it is known that the stronger-winged species, 
like Anosia plexippus, are capable of flying to even greater dis- 
tances. Some of them have come aboard of vessels a thousand miles 
or more from land. 
Moreover, vast flocks of one small, American, sulphur-yellow species 
(Zurema lisa) have been seen to come from over the sea and arrive 
on the shores of Bermuda, like the migratory birds. Perhaps they 
may be aided by strong winds in these cases. Some of these remain 
and breed on the islands, if they find here suitable plants for the 
food of their larve. Thus they may often have arrived here before 
the advent of man, but if there were then no plants suitable for 
their food they could not have become naturalized. 
This must have been the case with the Asclepias Butterfly (Anosia 
plexippus), for the only plants on which its larvee can feed have been 
introduced since the settlement, and probably the same is true of 
most of the others. Thus their naturalization has been indirectly, 
if not directly, due to man. 
During the winter and spring, when most of the entomological 
collections have hitherto been made, the number of Lepidoptera that 
are active is small. A few butterflies, like Anosia plexippus, are 
* See Guer.-Men., Hist. I. Cuba, vii, p. 317, pl. 18, figs. 7-7d. , 
+ While working late at night, nearly every night in April, with the windows 
open, very few species came to the lights, not more than a dozen of moths 
altogether. But of these one or two species were very abundant, especially a 
moth, about 28"™" in expanse, mottled with light and dark gray, in varying 
proportions, some specimens being very dark or blackish gray, while others 
were much paler or stone-gray ; (? Heterogramma, sp.). Unfortunately Mr. S. 
Henshaw, to whom many of my moths were sent for determination, has not been 
able to report on them in season for this article. But the number of additional 
species is not large. 
