1907] 
COOUDGE — GEXUS CHRYSnrHAXVS 
119 
and editlia. The full-grown larva and ])U]>a have been briefly described. The 
larva fced.s on Riiinex longifolius. 
G. editha, Mead. Known from Oregon, ('alifornia, Utah and Nevada. It 
i.s common at Lake Tahoe and is not rare in the vicinity of San Francisco Hay. 
7. (jorgon, Hoisd. Occurs in Nevada and (,'alifornia. ^Ir. .1. C. flrundel 
has briefly described the life history and he has kindly sent me a number of eggs. 
These are laid in the forks of a sj>ecies of Erigonum. Usually but a single egg i.s 
deposited in a fork but sometimes as many as seven or eight are found, but are laid 
by different females. They are deposited in June or July and according to Mr. 
Grundcl hatch the latter part of August, but those .sent me have not hatched yet 
(October). The egg may be described as follows: Diameter about 1 mm.; color 
dirty creamy white. Hemispherical, flattened at base, marked by numerous ])rom- 
inent polygonal or semicircular depressions. 
8. thoe, Boisd. A well known speci&s, but the life history is still imperfect. 
It is found in the eastern states and I have s])ccimens from New Mexico and Colorado. 
9. mariposa, Heakirt. Recorded from Washington, Oregon, ^Montana, Cali- 
fornia, Colorado, British Columbia, and Canada. I have taken it commonly near 
Missoula, ^lontana. The larval food-plant is V iccinium. 
10. zeroe, Boisd. An uncommon, though well distributed, species. I have 
it from Colorado, Montana and Lake Tahoe. It is also found in Utah, Wyoming 
and Idaho. The females are much rarer than the males. There is considerable 
variation in the tinting on the underside of the secondaries. 
11. helloides, Boisduval. Common throughout the west from Iowa and Illinois 
to ^’ancouve^ Island. The larva feeds on Folygonutti aviculare. 
12. doreax, Kirby. This is an arctic form found in Alaska, British America, 
South Labrador and has also been reported from IMichigan. Wright considers it a 
northern variety of helloides. The variety florus, Edw., is known only from Gar- 
rett’s Ranch, British America. 
1.3. epi.vanthe, Bd.-Lec. Our smallest species, ranging from Newfoundland 
to Vancouver. 
14. hypophleas, Boisd. Common in the Atlantic States. The aberration 
fasciata, Strecker, has the transverse rows of spots on primaries much enlarged, and 
blended together to form an irregular band. The variety /a/fto/t/s, Ilulst, has the 
coppery reddish color replaced by a glowing somewhat sooty yellow. I am not 
acquainted with the var. fieldcni, McLach., which is recorded from Arctic America. 
The preparatory stages have yet to be fully worked out. 
1.0. phlaeas, Bd.-Lec. A European species, which has been reported from 
Alberta. 
