__ENTOMOLOGICAL NEWS. 205 
a The alpine variety simplonia Freyer, seems nearest the us- 
ual American type, _wevhave also individuals in which 
the markings approach celia Esper., considered to be another 
of ausonia,. 
_ determir the relationship, but I have been unable to find a 
_ description of these stages of ausonia. It is to be noticed that 
_ Where a species becomes widely dispersed and sections are sep- 
sd by impassable barriers, the larvae are often first to differ, 
4 one quite distinct before any wide difference is 
our species of Euchloe, ausonides exhibits con- 
variation especially in size and the density of colora- 
male the ground color is sometimes pure white, 
more or less yellow-tinted. The female frequently 
I upper surface of the secondaries suffused with a buff 
- or ochraceous tint and the dark green marbling of the inferior 
surface of the secondaries varies somewhat in density in both 
oa yon The discal spot also varies considerably ; sometimes it 
fe’ or in the form of a sinuous bar, of 
va a rule, western specimens are much 
‘larger than eastern. We do not consider the variety hyantis 
_ Hy. Edw., as placed by Dyar and Skinner, a variety of auson- 
ae not the summer brood as we have compared our 
em with descriptions of hyontis and find them abun- 
on distinct. Specimens of the summer brood closely re- 
| those of the typical form, except in being more yel- 
form coloradensis Hy. Edw., may be known 
tint on the underside of the secondaries, 
bar of the primaries above is in the form of a 
black, lunate dash. It is recorded from Montana, Colo- 
California. We have not noticed it in this locality. 
good series, it intervaries to ausonides and can 
be considered worthy of varietal rank. It would be in- 
to compare our varicties of ausonides with those of 
ia. Although ausonides has a wide distribution, ranging 
the Rocky Mountains from Arizona to Alaska, it ap- 
be rather local, but is quite common when found. In 
Clara Valley, it is a common and early butterfly, 
t the flowers of Brassica, Radix and other cruci- 
It usually appears about the end of February, 
Hier 
: i 
i 
ii 
FE 
: 
: 
