ACADEMY OF SCIENCES. 89 
separating this form from its allies. The differences between them are very 
apparent in a series of each. 
Hemaris palpalis. Grote. 
Taken at Gilroy, Santa Clara County, by the late G. R. Crotch. Its chief 
difference from Thetis seems to be in the darker shade of the labial palpi. 
It is somewhat remarkable that no species of Mr. Grote’s genus Hemorrhagia 
has yet been discovered on the Pacific Coast, more especially as in the Atlantic 
States the species are more numerous than those of Hemuaris. 
Aillopos tantalus. Hubner. 
This fine insect is not rare in the neighborhood of Mazatlan and other 
portions of Northern Mexico, and I have seen a specimen taken at Cape St. 
Lucas, Lower California. It may, therefore, yet be found within our limits. 
Euproserpinus Phaeton. G. & R. 
= Macroglossa Erato. Bois. 
This exquisite little species, so rare at present in collections, appears to be 
found only in the vicinity of Los Angeles, two specimens in the collection of 
Dr. Behr and the original types in that of Dr. Boisduval having been obtained 
from that locality. Itis said to be an early insect, and probably disappears 
with the flowers of the spring. 
Proserpinus Clarkiee. Bois. 
As the delicate green tint of this beautiful insect fades very quickly, I 
subjoin the following description from a very fresh specimen, taken during 
the past summer, in which the original coloris at present admirably preserved. 
It will be seen that both Clemens’ and Boisduval’s descriptions give a wrong 
idea of the color of the insect. 
Head, greenish olive above, whitish beneath; labial palpi,. whitish, with 
green tinge. Eyes and tongue, brownish black. Antenne, black above, 
reddish beneath; terminal spinule, white, with the extreme hook yellowish 
brown. Thorax above, greenish olive, whiter at the sides and beneath. 
Abdomen, greenish olive with a white tinge, except the three anal and the 
fifth segments, which are dark olive green, the anal segment being marked in 
the center with a paler streak. Beneath, the abdomen is greenish olive, with 
the segments edged posteriorly with white. Anterior wings, rich greenish 
olive, the color of P._Hnothere, paler at their base, except towards the costa, 
where there is a darker shade. ‘‘The median space is rich greenish olive, 
narrowing to the internal margin, and enclosing a black discal streak.’’ 
Behind this band, and resting on the internal margin, is a pinkish shade, not 
visible in old specimens, and beyond this is a rich olivaceous band, spreading 
to and widening out upon the costa, the outer edge being somewhat notched. 
Fringe of the anterior wings, olive green, tipped with black Posterior wings, 
bright orange yellow, with a broad and moderately regular black marginal 
band. Fringes, yellowish white. Underside of wings, wholly olivaceous green, 
darkest at the base. Across the dise of the posteriors is a slightly waved 
