756 A. K Verrlll— The Bermuda Islands. 



.Miss V. Hayward. A detached liead of the former was also found 

 with its jaws still firmly grasping the leg of a hard-back beetle. 

 Native of Madeira. Figures Ilia, a, b. A much larger, chestnut- 

 brown, winged female, 6" im long, of this genus (t. Ashmead) was 

 also sent in November. 



Odontomachus Latr. (sp.). A jumping ant of the family Formi- 

 cidse, near 0. insidans of the West Indies.* 



f. — 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 plexipp>us, 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 

 (Eurema lisd) 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 larvae. 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 larvae 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. f A few butterflies, like Anosia plexippus, are 



*See Guer.-Meu., Hist. I. Cuba, vii, p. 317. pi. is. 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. 



