PINE SPHINGES. 
769 
The different pine hawk-moths are of little economic importance, as 
they are of great rarity both in the caterpillar and moth states ; but 
from a scientific point of view these moths present much interest. 
Beside the pines, we have found the young larva3 on the spruce, late in 
August, at Brunswick, Me. 
Fig. 264. 
■Ellema harrisii; a, male; b, female. (The lelt winga represent the under side). 
Lintner. 
After 
I found on Pinus strobus, October 2, at Providence, a caterpillar which 
I refer to this species, as the green checks on the back are obsolete and 
the face is red, not green as in E. pineum, according to Lintner, and yet 
the back is checkered on segments 2 to 4 behind the head. The cater- 
pillar feeds stretched out like other pine larvae, the yellowish-white 
lines resembling the under side of a reversed needle of the tree in a 
bunch, which have yellow and white reflections. u Ellema harrisii," 
writes Mr. Lintner, " is distinct from Ellema bombycoides of Walker." 
I have an example of the latter, and there can be no doubt in the case. 
Even the antennae are quite different. 
Young larva. — Head very large, vertex high, ending in a large cone. Supra-anal 
plate large, long, triangular, ending in two blunt conical tubercles. Head pale green, 
tipped with red on tb© point of the vertex, from wbicb two faint white bands pass 
down by the eyes. Clypeus and labrum honey- 
yellow, black on the sides. Two dorsal and two 
lateral continuous linear white lines. A broken 
substigmatal broad snow-white line. Thoracic 
feet pale green ; abdominal feet tipped with red. 
Molted August 30. Length, 20 mm . For numer- 
ous interesting details, drawn by Dr. Gissler, see 
Plate xxxiv. 
Larva before the last molt. — Body thick and 
stout, head triangular, conical, the vertex pro- 
duced above, green on the sides ; in front red- 
dish, edged with a Y-shaped dark red and ex- 
ternally a dull yellow band. Labrum pale. 
Body green, with two dorsal and two lateral 
distinct whitish-yellow longitudinal stripes. On 
posterior half of body a broad median dull brick- 
red band, broken up in front into three reddish 
spots. Low down, just below the spiracles, a 
broad white line nearly interrupted at the 
sutures, with a reddish short stripe, one to each 
segment and inclosing a distinct black spiracle. 
JTeet pale reddish. Along under side of abdomen a broad dull reddish median band. 
5 ENT 49 
.FiG. 265.— Ellema harrisiir—a, larva; 
pupa. Lintner del. 
