ACADEMY OF SCIENCES. 91 
darker. But it appears somewhat absurd to claim for this the rank of a 
species, and deny the same position to its congener, which follows, as between 
Daucus and Livornica more really serious differences exist than between 
Chameenerii and Galii. 
Deilephila Daucus. Cramer. ' 
This is perhaps the most common of all the Sphingide: of the Pacitic Coast, 
being found from May to August in almost every garden, hovering about 
flowers, especially those of Verbena. The caterpillar, though well known, 
has never, to my belief, been described or figured. It feeds on various species 
of Rumex, Epilobiuwm and Polygonum. The additional white stripes upon the 
thorax certainly give this a wide separation from Livornica of Europe, while 
there is considerable difference in the shape of the median oblique band of 
the anterior wings. Ina specimen of Livornica from Italy, and also in one 
from the White Nile (both in my collection), this line is broader than in the 
American specimens, and, as it reaches the internal margin, spreads inwardly 
further towards the base of the wing. The costal markings also are more 
decided in the European and African specimens, and the marginal band of 
the posterior wings is certainly much narrower. 
Philampelus Linnei. G. & BR. 
A fine specimen of this very handsome species exists in Dr. Behr’s collection. 
It was taken by the late Baron Terloo in the northern part of Sonora, Mexico, 
at the base of the Sierra Madre. 
Philampelus Achemon. Harris. 
Very common, in some seasons, in the valleys of Napa and Sonoma Coun- 
ties, where the caterpillar is exceedingly injurious to the vines. In the sum- 
mer of 1874, at St. Helena, Napa County, over ten bushels of caterpillars 
were gathered from one vineyard, only four acres in extent, in the course of 
two days. I can perceive no difference whatever between the California spec- 
imens and those from the Eastern States. 
Tribe SMERINTHINI. 
Smerinthus ophthalmicus. Bdv. 
Formerly rather common in the vicinity of San Francisco, but owing to the 
drainage of large districts, and the consequent destruction of the willows on 
which the caterpillars fed, it has become quite a rare species. In the foot- 
hills of the Sierras and the Coast Range, as well as in Oregon and Vancouver 
Island, it is occasionally met with, and a strongly marked variety is also 
found, which I have called 
Smerinthus pallidulus, var. Hy. Edw. 
It differs from the typical form by its much paler color, as well as by the 
almost obsolete markings of the upper wings. The general color of these is a 
