SPHINX HARRISII. 
117 
Upper surface; primaries ashen, with transverse undulate lines and shades; two black streaks in the in- 
terspaces between the median nervules ; fringes white, brown at termination of veins. 
Secondaries brownish, basal half pale, nearly white ; faint evidences of a mesial band ; fringe as on 
primaries. 
Under surface brownish. Secondaries paler at abdominal margin. Fringe as above. 
Habitat. New England, Middle, and others of the Atlantic States. Rare. 
Larva is green, with lateral pale stripes, destitute of the caudal horn, and feeds on Pinus Strobus and 
doubtless other species of Coniferce. 
It has long been surmised that this species might be identical with Lapara Bombycoides, Walker,* which exists at present, as far 
as is known, in the single type example in the Hopeian Collection at the University of Oxford ; originally it was contained in the 
collection of Mr. Saunders, of London, England, where it was described by 'Walker ;f afterwards the whole of the Heterocera of 
Mr. Saunders’ collection were added to the Oxford Museum. From this unique, which is in perfect condition, Prof. Westwood had the 
kindness to make for me an accurate coloured drawing which represents an insect indeed allied to Sphinx Harrisii, but separated from 
it by the following differences, which Prof. Westwood, to whom I submitted a proof of the accompanying figure of Harrisii, has indi- 
cated in a recent letter : Bombycoides is much more brownish in tint, not near so leaden grey ; the thorax is destitute of all black lines ; 
the dark dashes on middle, near inner margin of primaries, are more central and nearer to base of the wing ; the secondaries are with- 
out any appearance of dark central fascia; the fringe on anal margin is of same pale dull brown as the rest of wing ; under surface 
of all wings is uniform pale dull brown. 
The figure of Prof. Westwood is also larger than any example of Harrisii I have yet seen, being about 2§ inches in expanse. 
In Grote’s last List of N. Am. Sphingidaahe lias given Ellema Harrisii as a synonym of Bombycoides, but without stating any 
reason for so doing. 
With Ellema Harrisii has long been confounded the previously described Sph. Coniferarum, which latter was long looked on as a 
myth, owing doubtless to its great rarity. 
Dr. Clemens, in his Monograph in Jnl. Acad. Nat. Sc., Phila., states in connection with Sph. Coniferarum : “The specimen 
Dr. Harris described under this name, as I have ascertained from a photograph, was E. hari'isii. This is probably likewise identical 
with S. coniferarum. The discovery of the larva of harrisii will remove any doubt respecting the identity of the insects.” 
It is not safe to depend entirely on pictures, be they ever so accurate or even photographic. 'Whether Dr. Clemens’ opinion 
above cited be correct or not, it is at least evident that Dr. Harris was acquainted with the larvte of Coniferarum, Abbot & Smith, as he 
says on page 328 (Ins. Inj. Veg., Ed. 1862): “the curiously checkered caterpillar of Sphinx Coniferarum on pines;” the larva of Har- 
risii is not “curiously checkered,” but is green with lateral and sublateral stripes of yellow and white. 
SPHINX SEQUOIiE. Boisduval. 
Lep. de la Californie (1S69). 
Henry Edwards, Pi'oc. California Acad. Nat. Sc. (1873). 
Hyloicus Sequoice, Grote, Bull. Buff. Soc., Vol. I, p. 27 (1873), Vol. II, p. 228 (1875). 
(PLATE XIII, FIG. 17 J 1 .) 
Expands 2 inches. 
Head and body grey, two black lines on head extending thence along upper edge of tegulte; abdomen 
with a black dorsal line, sides with alternate black and white bands. 
Upper surface, primaries grey, with short black streaks in the cells, and one transverse one, accompanied 
by a shade near the exterior margin ; fringes brown and white alternately. 
Secondaries brownish, without marks ; fringes white on abdominal and inner half of exterior margins, 
rest brown and white alternately. 
Under surface brownish grey. 
Habitat. California. Mus. Boisd., Hy. Edwards. 
The original of Fig. 17 was lent me by Mr. Henry Edwards, of California, and is, probably, with the exception of Dr. Boisdu- 
val’s type, the only example extant in any collection. In Mr. Edwards’ Memoir on Pacific Coast Lep., above cited, he says : “I had 
the good fortune to take a fine of this rare species in Bear Valley, in June, 1872. It was hovering at mid-day over a pool of water, 
darting down occasionally to drink. The specimen from which Dr. Boisduval made his description was captured by the late M. Lor- 
quin, at Grass Valley, resting on the bark of a Redwood tree, ( Sequoia sempervirens — Lamb.)” To Mr. Edwards I am indebted for the 
opportunity of presenting the figure of this rare species. 
*C. B. M., Vol. VIII, p. 233 (1856). 
f“Cinereous. Fore wings. with a zigzag oblique black line, and with several lanceolate black marks. Hind wings brownish, 
paler towards the base ; eilhe white. Length of the body 10 lines ; of the wings 24 lines. 
Canada. In Mr. Saunders’ collection.” Walker, C. B. M., Vol. VIII, p. 233. 
