236 
3IEM0IRS OF THE :>^ATIOXAL ACADEMY OF SGIEXCES. 
two oblique tegular stripes the hinder part of the thorax is dark brown, including a small tuft ou' 
the hinder edge of the thorax and a large two-lobed liattened tuft, which covers the base of 
the abdomen, the posterior edges of the double tuft becoming blackish. 
Fore wings long, the ai)ex produced as in H, (jutHvHta; the wing with usually distinct 
scalloped bands; two distinct unequal scallops at the insertion ol‘ the wing (obsolete in some- 
before me); middle double-scalloi)ed line well marked; the scallops uneven, two in median space, 
the largest one rectangular; a short acute scallop in front of the median vein and extended 
outward along it; two nearly oven-sized scallops on the costal edge; a clear space between the- 
middle anil outer scalloped lines; outer scalloped line A'cry irregular, scallops deep and heavy 
black-brown, and the line of scallops curving inward from the cubital vein to near the apex on 
the costa. The costal edge on outer thinl with three distinct narrow linear black spots, the 
venules marked with black and whitish gray scales (in some males this outer line is almost 
obsolete). A submarginal row of eight blackish spots, three of which are situated behind the 
last median venule; this series is plaiidy dislocated, the subapical three being set farther inward 
than those below, and this is a ready moans of separating the species from E. gnttivitta. In 
three females the fore wings and thorax are yellowish green, while in the male of a clear sea- 
green. 
Hind wings uniformly mouse-colored or dusky ashen, yellowish on the costa, ou the outer 
third of which is the beginning of an outer whitish line, forming two scallops; the wing is 
sometimes pale, almost whitish at base, but dusky toward and at the margin. 
Beneath, the fore wings are clear ash, the costa a little dusky, Avith tine blackish linear marks- 
toward the apex; the submarginal row of blackish spots api)ear through, but the series is not 
dislocated: hind Avings not marked, except by three submargiual dusky spots behind the second 
median venule at the iiiternul angle; abdomen ash, with a faint yellow-green tint. 
Expanse of wings, 3 , 45 mm.; 9 , 55 mm. (2.10 inches); length of body, 20 to 21 mm.; 9 
23 mm. 
This species may be known by the fore wings being slightly more produced toward the apex 
than those of H, by the clear space between the distinct middle and outer scalloped 
lines, and by the dislocated series of snbmarginal dusky spots; the wings in the male are uniformly 
sea or olive green, wiiile in some individuals the hind wings are yellowish green or rather brown. 
fMy original dcvscription in third a'oI. Proc. Ent. Soc. Philadelphia is defective, as the tyi^e 
specimen was rubbed and witliout the greenish tint of fresh specimens.) 
From //. guttimita it is distitiguished by being more uniformly oliv’e-gi'eeu and by the lack of 
whitish discal patches. The discal spot is almost obsolete, and with oidy a slightly marked dusky 
patch beneath, this blackisli patch being sometimes large and consincuous iu some examples of 
H. guttivitia. The palpi are also larger, the third joint longer and slenderer, and the second joint 
is black externally; the scalloped lines are more distiuct, and this holds for old rubbed specimeus, 
while ill i/. gnttivitta they tend to become obsolete. 
The Franconia, N. H., specimens are less dark than those of H, gnttivitta. In these siiecimens 
the body and wings are suffused with oeherous yellow scales, while in one from Florida, kindly 
given me by Mrs. Slosson, the body and wings are decidedly reddish brown, including the thorax 
and end of the abdomen. This and gidUvitta have given me more trouble than almost any other 
Notodontians, as they are so liable to be confounded. 
Larva , — The caterjhilar of this species has been found by Professor Riley feeding ou the maple, 
and closely resembling in the last stage the caterpillar of H, gnttivitta Packard. The type of my 
original description was captured by myself in Brunswick, Me.; Professor Riley’s was bred in 
Washington, 1). C., the moth appearing May 28. Mr. Howard L. Clark has found it not 
uncommonly in Rhode Island. My original tyi^e was from Maine. 
Stage II . — The larva was received from Mr. Joseph Bridgham, of Providence, R. I., July 1 
(PI. XXXII, figs. 1, la). Length, 7 mm. Easily recognizcHl by the pair of three-forked dorsal 
prothoracic reddish brown horns, while on each abdominal segment is a pair of sharp conical 
brown spines. 
The head is rounded, reddish brown, with no tubercles or markings. A i>air of large, high, 
thick, three-forked, reddisli brown horns, like those of a deer, the lowermost tine smaller than the 
