250 
MEMOIES OF THE NATIONAL ACADEMY OF SCIE^fCES. 
Larva. — Leiigtbj wlieu at rest, 1.2“) iuclies (in shape tapering slightly from the inicldlo 
forward, but more rapidly from that point backward, the body deeper than broad). General 
■color bright, clear green, a little spotted with white, marked as follows : Head gray, a little lighter 
through the center. Joint 1 contains two dark purplish black warts on the dorsum, reddish puri)le 
at the base, the space between them whitish. From these runs backward a bright, brownish 
purple line, not very dark, at first about one-sixteenth of an inch wide. This expands, reaching 
the subdorsum in the posterior part of joint 4, dividing in the middle in joint 3. The line runs 
along the siibdorsal region to the posterior part of joint G, where they xmite and cover the whole 
of the dorsal part of joint 7 and all but a little of the posterior part of joint 8, when it again 
separates and runs as two lines to the posterior part of joint 9. The space on the back of joints 
3, 4, 5, and 6 between the purple lines is filled with orange. On joint 4 a spur is giv^en off from 
the purple line to the third thoracic leg, another runs from joint 6 to the first i)ro-]eg, another 
short spur on joint 9; both of the last with oblique lines of lighter shade. On joint 9 the orange 
is outside the puri)le, extending down the lateral spurs. Joint 10 has no purple nor orange, except 
a little below the stigmata, but it ha-s faint yellow subdorsal lines. Joint 11 has purple subdorsal 
lines whhdi unite on the anterior part of joint 12, continuing backward as a broad dorsal line, 
darkest on the anal jdate. The space on joint 11 between the subdorsals is filled with orange. 
Feet and legs ])urple, but the rest of the underside green ; under the glass the above-described 
brownish purple lines are not uniform, but mottled with irregular lighter lines.” (French). 
From the above description it will be seen that the two prothoracic warts are retained 
throughout larval life, this, as Dr. Dyar has remarked to us, being the only species in the genus 
in which these tubercles are retained after the last molt. This fact shows that pnlverea is the 
most primitive species of the genus, but until we discover the first stage of astarte it will be 
premature to construct a genealogical tree of the genus. 
It is evident from the larval characters that this species should be placed below H, guttivitta 
and H. ohliqua and astarte, while the moth is near H. ohliqiia^ with no near affinity to H, guttivitta 
and hiundata. As it is the only species known to us with the tubercles retained in the last 
stage, it is most probably the species which Doubleday has figured under the name JT. athereo. 
Habits, — All that is known with certainty is stated by Professor French as follows: 
Tho single larva from which the above description was taken was found June 30 on the body of u white oak 
tree. During tho few days before it pupated I fed it on tbo leaves of Quercua alha and Q. coccineaj both of which 
it ate readily. July 6 it entered the dirt of the cage to transform, and produced the imago August 6. 
In a volume (Gray’s copy) of Abbot’s manuscriid drawings (fig. 117) is a fine colored sketch of 
H, inilverea. It has well marked prothoracic tubercles, and is drawn in different attitudes as 
feeding on Styrax pidverulentum, (For stages I-Y see Appendix A, p. 283.) 
Geographical distribution, — Thus far it has not been met with beyond tlie limits of the 
Axipalachiau and Austroriparian snbprovinces. 
Seekonk, R, L (Mrs. S. W. Bridgham); Lonsdale, R. 1. (Deardeii) ; Peimsylvauia (Grote and 
Rob.); New York (Grote, Hulst, lileumoegcn); Oarbondale, 111. (French); $ and $ , Punta Gorda, 
Gharlotte Harbor, Fla. (Mrs. Slosson); Georgia, (Abbot). 
Heterocampa belfragei (Grote). 
(PI. V, fig. 15 S.) 
Heterocampa helfragei Grote, Can. Ent., xi, p. 209, Nov., 1879; New Check List N. Ainer. Moths, p. 19, 1882. 
Litodonta helfragei Smith, List Lep. Bor. Amer., p. 31, 1892. 
Heterocampa helfragei Kirby, Syii. Cat, Lep. Het., i, p. 565, 1892. 
Nemu. and Dyar, Trans. Amer. Ent. Soc., xxi, p. 206, 1891; Journ. N. Y. Ent. Soe., ii, 
X>, 117, Sept., 1891. 
Moth, — One 3 . This is a true Heterocampa and near IL piilverea, «aud should not be included 
rn the subgenus Litodouta, although the nature of the female auteuiim is not kuowu; it differs 
from H. hydromeli in the outer edge of the fore wings being very oblique. Thorax ash-gray; 
collar with two transverse black lines; tegulm edged with black. A broad black transverse tuft 
cn the basal segment of the abdomen. 
