123 
pupa into the face of the frost. On warm winter days the moths may 
be disturbed in shelter. Since cotton is planted after the spring vege- 
tation has appeared, and no worm troubles the early plants, it is 
evident that Anomis xylina does not exist at that time in any 
stage. For if it existed as a moth, it would perish before the plant 
was up upon which to deposit; if as an egg, this would hatch 
equally before the food was ready ; if as a chrysalis, it could not lie ex- 
ceptionally dormant while kindred life was active, unless in all these 
cases it suited itself to the altered economy of its food plant. 
I have never found it in any stage in the Cotton belt in the early 
spring. The rapid numerical increase of individuals in the native 
broods may be owing to the absence of parasitic checks which have 
been escaped in migrating, and left behind in more Southern coun- 
tries. On the other hand, Heliothis armigera is a resident of the 
United States. While a comparison of American specimens 
(wmbrosus) with European individuals (armigera) affords me no ap- 
parently valid distinguishing characters, I yet remark that the 
larvae have not been compared. Iam not vet prepared to believe 
that the species has been introduced from Europe, feeding, as it 
does here, on some peculiarly American genera of plants. Yet, ac- 
cording to Guenée, its habitat is very extended, since it has been 
taken in Australia, where, however, it may have been introduced 
since the colonization and from America. It occurs apparently 
rarely in Europe, whereas it is here common. Has it reached 
Europe by a westward route from California? We shall probably 
soon write after its habitat—the world. 
HELIOCHILUS, Grote (1865), 
Heliochilus paradoxus, Grote. 
The aberrant neuration distinguishes this genus, originally de- 
scribed from Colorado Territory. I haye taken the species in Cen- 
tral Alabama, apparently only differing from my types by its smaller 
size. I learn that the genus has been since discovered in Northern 
Hindostan. 
