1890 .] 
545 
[Packard. 
near the tubercles, and another behind, one on each side, extending 
posteriorly from the antennae and mandibles half way up the back 
side of the head. 
The antlers of the early stage are now replaced by two conical 
rounded polished knobs, each bearing a minute bristle, and from 
them on the inside two parallel lines extend backward. 
The anal legs are shorter than in the early stage, being about 
as long as the well rounded supra-anal plate. Doubleday probably 
gives the characteristic attitude of this caterpillar when not walk- 
ing, its legs being moderately elevated. 
I add a fuller description of this larva when fully grown. 
H. guttivitta; maturelarva . — Head high, narrowing from below to 
the vertex, which is very slightly bilobed. Two black lines ascend 
from the antennae and approach each other on the vertex, the space 
between the lines slightly roseate ; outside the head is light uni- 
form brown with a slight greenish and lilac tinge ; the clypeus is 
small, while the median suture of the epicranium in front is very 
distinct. On the prothoracic segment behind the vertex are two 
contiguous, thick, conspicuous, large, conical, bright red tubercles, 
dark at the tip ; there are no other humps, and none at the end of 
the body, which is thickest at and a little behind the middle, the 
body tapering gradually to the long anal legs which fork widely 
and are longer than the others, but are constantly used. Supra- 
anal plate unusually small. Color of a peculiar brownish-green 
dotted with black points and specks, with a white spot between the 
prothoracic tubercles. Body above finely marbled with dark brown, 
with a broken pale flesh-colored line ; beginning on the mesothoracic 
segment, and on the first to third abdominal segments suddenly ex- 
panding into a large, broad, sub-lozenge-shaped spot, suddenly suc- 
ceeded, over the segment bearing the first pair of abdominal legs, 
by a rounded spot. On the top of the fifth segment begins another 
dorsal patch of the same color which widens and extends down the 
sides of the third segment from the end. Along the middle of 
this patch are two parallel dark lines ; and two broader dark lines 
of speckles begin on the fourth segment from the end of the body, 
converging and uniting on the second segment from the end form- 
ing on the last two segments a broad median dorsal line. Thoracic 
legs reddish ; abdominal legs reddish flesh color. Anal legs slen- 
der, reddish. Length 35 mm. On the oak at Providence, Oct. 9. 
To recapitulate : 
PROCEEDINGS B. S. N. H. VOL. XXIV 35 JULY, 1890. 
