Packard.] 
520 
[Feb. 19, 
fed and unnaturally small). The head is large, as wide as the 
body in front ; the cervical shield still persists, as do the clavate 
hairs ! The color has now changed to a dark reddish brown, above 
and beneath, with six longitudinal gray stripes seen from above, 
and four seen sidewise ; the additional stripe is the infra-spiracu- 
lar one, while the spiracular one has moved up, the spiracles being 
situated between them. 
Fifth stage . — Length 28 mm. Aug. 29th. Very different from 
the fourth stage, the color being still darker, while only two gray- 
ish lines are seen from above, and two lines when the larva is seen 
from the side. The two dorsal and the supra-spiracular lines have 
disappeared. The body is now clothed with numerous soft fine 
gray hairs, many of which are nearly twice as long as the body. 
The anal legs are still smaller than in the preceding stage. 
Recapitulation. — 1. In this species the larvae of the first four 
stages apparently have clavate glandular hairs, an unusually late 
persistence. 
2. The body is reddish in the three first stages, but becomes 
dark in the fourth, while in D. ministra the body is reddish in the 
fourth, its larva being less precocious than in this species. 
3. The loss of two of the longitudinal stripes in stage V is note- 
worthy, and the habits of the larva should be noted by the future 
observer to learn the probable cause of such a change ; also why 
in D. ministra , and perhaps in other species, there is such a de- 
cided change in the general color and stripes in the last as com- 
pared with the penultimate stage. 
4. The black suranal plate seems in stage I to be entire, and to 
divide in two at the end of the stage, not being present in the third 
stage. It is to be hoped that those who may hereafter rear the 
species of Datana , will preserve specimens of the earlier stages in 
alcohol for future study. 
LIFE-HISTORY OF APATELODES TORREFACTA (ABB. AND SM.) 
The following notes are based on the sketches and notes made for 
me by Mr. J. Bridgham, who kindly preserved for me in alcohol spec- 
imens of the two later stages, from which with the aid of his excel- 
lent drawings the following description of those two stages were 
drawn up. It appears that there are six larval stages. 
The eggs were laid on the wild cherry June 22, and hatched July 
9. They are much flattened, resembling a very shallow inverted 
