Saturniidae 
This beautiful moth occurs in Arizona and northern Mexico. 
(4) Hemileuca tricolor Packard, Plate XII, Fig. 9, $ . (The 
Tricolor Buck-moth.) 
This species, like the preceding, is found in Arizona and in 
New Mexico. The larvae feed upon the Grease-wood, according 
to report. 
Genus PSEUDOHAZIS Grote & Robinson 
This is a small genus of rather striking and exceedingly vari¬ 
able insects, the life histories of which have not been as thor¬ 
oughly studied as is desirable. The moths appear to be diurnal 
in their habits, and may be found in vast numbers in the morn¬ 
ing hours on bright days in their favorite haunts in the region of 
the Rocky Mountains. I have found them particularly abundant 
about Laramie Peak in Wyoming in the latter part of June and 
July. They appear to frequent flowers in company with diurnal 
lepidoptera, as the various species of Argynnis, and they may 
then be easily taken. Their flight is rapid. They are character¬ 
istic of the country of the sage-brush, and the ranges of the 
western sheep-herder. 
(1) Pseudohazis eglanterina Boisduval. 
Form nuttalli Strecker, Plate IX, Fig. 7, $ ; Plate XI, Fig. 5, 
$ . (Nuttall’s Sheep-moth.) 
Syn. shastacnsis Behr; denudata Neumoegen. 
The two figures given on our plates show two forms of this 
well-known insect. Whatever the amount of black or purple 
upon the fore wings the specimens may always be distinguished 
from others by the presence just beyond the discal spot of the 
fore wings of a longitudinal dash of Indian yellow. This is 
characteristic, and I have never failed to find it in a long series 
of specimens, no matter how the other markings varied. 
(2) Pseudohazis hera Flarris, Plate IX, Fig. 8, $. (The 
Hera Moth.) 
Form pica Walker, Plate XI, Fig. 3, $ ; Fig. 4, $ . (The 
Magpie Moth.) 
This extremely variable moth is represented by the typical 
form in the figure given upon Plate IX, and in the figures given 
upon Plate XI by two specimens showing the form, which is 
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