COLIAS IV. 
laying eggs. To make sure that I was stating the fact in this particular, I 
questioned Mr. Boll particularly as to the hybernation of both Eurytheme and 
Keewaydin^ and he writes in reply, “ I never saw specimens of the bright orange, 
or late summer type of this species later than the first days of November, and 
these were always much worn. I never saw Keewaydin flying between Novem¬ 
ber and May.” In another letter Mr. Boll states that any worn individuals seen 
at the close of winter are Ariadne , and in March these are taken in copulation 
with Ariadne fresh from chrysalis. I received from Mr. Boll in April, 1878, 
2 d 3 9 , taken in Archer County, between the 24th and 28th February, all fresh 
from chrysalis. One of the females is an albino, one pair are typical Ariadne, 
and the other male and female are similar to the examples had from the Illinois 
Jarvae mentioned, Var. A. 
From Colorado, a very small percentage of the butterflies taken by Mr. Mead 
show a mingling of the characters of Keewaydin and Ariadne, but nearest the 
former. (Var. B. Fig. 6.) The orange is limited on primaries to a patch on inner 
margin, and the under side of secondaries is much dusted. Mr. Mead, comment¬ 
ing on Mr. Boll’s paper, writes, “ I doubt if the form Ariadne occurs at all in 
northern Colorado, where the winters are severe. I met with Keewaydin and 
Eurytheme, in Colorado, in about equal numbers, from first of June to last of 
August, when cold weather set in. The nights were cold most of the time, cer¬ 
tainly often at the freezing point, during June and August, and by 10th Septem¬ 
ber, the whole South Park was covered with snow. Keewaydin was as abundant 
at the last of the season as at the first. Ariadne I have only found in Yo 
Semite Valley, California, where it was rather abundant about the middle of 
October, in company with Keewaydin and a few Eurytheme. The temperature 
was then moderately cold, and it was at the close of the dry summer season.” 
Examples of the form Eurytheme from northern Colorado have not the intensity 
of color and the iridescence of those from Texas, but among the butterflies col¬ 
lected in southern Colorado, in 1877, by Mr. Morrison, are some Eurytheme 
quite equaling anything‘seen from Texas in these respects. 
Mr. Henry Edwards says of these forms, in the paper referred to: “ Eurytheme 
is abundant in clover and alfalfa fields from July to September, the richest and 
most deeply colored individuals occurring latest in the season. It is rare in the 
mountains, while Eeewaydin is abundant at even very considerable elevations. 
Keewaydin is the commonest butterfly of California, appearing in April or early 
May and continuing through the summer. I have taken it from San Diego in 
southern California to A ancouver s Island. Ariadne is a local and early species, 
of which there is a second brood. In the first warm days of February many 
specimens of Ariadne, entirely fresh, have been taken by me on the hills near 
