24 BULLETIN NO. 4, DIVISION OF ENTOMOLOGY. 
as does the Anchylopera. Toward the end of July the larve pupate, 
either in their habitations or on a leaf close by—never on the ground. 
The second brood of moths emerges in August (18th to 23d), and the 
moths of this also are uniformly yellow; one specimen only which I 
found had the hind wings and body dusky, but this escaped through 
the meshes of my net while I was examining it. These moths oviposit 
in the early part of September and produce larvie about the 12th. The 
chrysalis is formed late in September or the first of October, and the 
moths emerge about the 9th or a little later. This brood of moths is 
uniformly gray. I did not meet with a single exception, and that it is 
the result of the eggs laid by the yellow form I am perfectly positive, 
for not only were there no gray moths on the bog to produce them, but I 
watched the yellow forms oviposit, obtained some eggs from females in 
confinement, and sent them to Washington to be reared, and Professor 
Riley informs me that gray individuals were obtained from them.* The 
moths continued to emerge and were flying on the bog when the water 
was put on. 
The egg of this species is precisely like that of the Anchulopera in form 
and color, but is very slightly larger; it is laid on the under side of a 
leaf, as in that species, and at about the same time, so that practically it 
is impossible to distinguish the two; the larva also much resembles that 
~In the ‘General Index and Supplement to the nine reports on the Insects of Missouri,’ 1881, in 
speaking of Tortrix cinderella Riley, we remarked as follows (pp. 82-83) : 
‘From specimens reared from cranberry-feeding larve received from Mr. John H., Brakeley, of Bor- 
dentown, N.J., I am satisfied that this is the same species briefly characterized by Pac kard in the first 
edition of his Guide (p. 334) as Tortria oxycoccana, and that 7. malivorana LeBaron (my Rep. LV, p. 47) is 
but a dimorphic, orange form, subsequently described by Packard as 7. vacciniivorana (Haydeén’s Re- 
portof the U. S. Geol. and Geogr. Survey of the Territories, 1878, p. 522). The orange and ash-gray spec- 
imens are thus bred both from Apple and Cranberry. I have reared both forms from Cranberry and 
from Apple, and they are undistinguishable in the larvaand pupa states. The gray form is often more 
or less suffused with orange séales and the orange form less frequently with gray scales. This is the 
most remarkable case of dimorphism with which I am familiar in the family, and points strongly to 
the important bearing of biological facts on a true classification. The dimorphic coloring is not sexual, 
but occurs in both sexes. The eggs of this species are very flat, circular, and translucent, with a diaw- 
eter of 0.7™™, and are laid singly on the under side of the leaf near the mid rib. The species belongs to 
ghe genus Teras, and as Packard's specific name oxycoecana has priority, the insect should be known as 
Teras oxycoccana, Pack. The insect, according to Mr. Brakeley, who gives an account of it in the 
Report of the Seventh Annnal Convention of the New Jersey Cranberry Association (1879, p. 7), com- 
monly affects, also, the high-bush whortleberry. .The gray form of the moth is most frequent in au- 
tun.” 
Prof. C. H. Fernald, in his ‘‘ Synonymical catalogue of the described Tortricide of North America, 
north of Mexico,” 1882, as stated by Mr. Smith, still retains the four insects as distinct species, and 
thus doubts the correctness of our conclusions. We therefore took pains to putthe question to so fulla 
test as to leave no reason for doubt. Mr. Smith’s experience in the field, as above shown, is confirmatory; 
but from material which hesent on to Washington, we not only actually bred the orange form from the 
first brood of larve received in May and produced from the hybernating slate-colored form, but also 
the slate-colored form from larve hatched from eggs laid by the orange form. Over two hundred spec- 
imens, reared from larve received in August, and produced by the second brood of orange moths are 
all referable to the slate-colored form. In fact all the moths which issued after September 23 were of 
‘his form, though there was but a difference of five days between the issuing of the last yellow and the 
first gray specimens, the latter continuing to issue through October. Many of the gray specimens, 
especially those which first appear, are so suffused with orange or reddish scales as to appear somewhat 
intermediate between the two extremes, but there are none which are not at once referable to the gray 
form. It is in fact an interesting case of seasonal dimorphism, and how far it is influenced by tem- 
perature, future experiment, which we hope to make, will determine.—C. V. R. 
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