MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 
241 
<{wliicli shows that ia this as well as iu Schiziira ami perhaps some other genera of Notodoutidm 
there may be useful specilic characters in the front of the head). Other differences may be seen 
by comparing our camera drawings with hg. 82. The vestiges of the $ sexual aperture are oval, 
and shorter than iu H. guitivitta. Behind the mesoscutnm the dark transverse line or band 
usually luesent is formed of six black tubercles (these iu my single specimen may be somewhat 
deformed in this respect and not entirely normal), which are not 
sfpiarc, but very short and transversely oblong, but otherwise as 
in IL gutUvitta. Length, 18-19 mm. 
Ilahits . — The habits and distribution of this species are very 
similar to those of IT, gxdtivitta. In Providence the larvm in the 
second stage occurred July 1, and the fully fed larva occurs as late 
as September 10, 
In Maine I have found larvm 10 mm. in length feeding on the 
rock niai>le July 21, and the fully developed caterpillars occur there 
late iu August and during the early part of September. As in H, 
Quttlviitaj the young horned larva shakes its head rapidly from 
side to side when disturbed. The larvm when nearly or quite fully 
grown are often observed resting on the midrib on the underside of 
the leaf. When full-fed they leave the tree and wander about before 
pupating. Riley has captured the moth in May and in August. 
Food plants , — The red and sugar maple ( Packard) ; “ fire cherry, 
yellow birch, white birch, willow, witch hazel, dogwood^ beech, hick- 
ory, etc, (Dyar; see also the food plants iu Dyar’s description refer- 
red to in Ent. Amer.”), 
Geographical distrihntion, — Brunswick, Me. ( Packard). In Fran- 
conia, N. n., which appears to be an outlier of the Hudson ian fauna, 
this moth is less common, fewer having been captured at 
gnitivitta, which is more frequently collected. 
light 
Fig. 83. — Pupa of Jletei'ocampa biuii' 
data. 
by ]Mrs. Slossou than of IT. 
Massachusetts (Harris Coll. 
; Plattsburg, 
N. Y. (Hudson); New Jersey, Pennsylvania (Palm); 
Providence, R. I. (Clark, Packard); New York (Hiilst); Wash- 
ington, 1). C., New York, Illinois, Missouri (Riley, XJ. S. Nat. 
Mus.); Kittery, Me., Tiflin, Ohio, Champaign, 111. (French); 
Nortli Carolina (Morrison); Winter Park, Fla., reddish form 
(Mrs. Slosson). 
The southern and southwestern limits of this species are 
not known; it has not been discovered in Texas nor in the 
Rocky Mountain region. It is recorded by Drucc from Jalapa, 
Mexico, and Volcau de Atitlan, Guatemala, 2,500 to 3,500 
feet elevation ; San Geronimo, Guatemala, and Panama, ^^olcau 
de Chiri(iue, 2,000 to 3,000 feet elevation. I^Ir. Druce adds: 
“The Central American specimens before me agree w'ell with 
Walker’s type iu the National collection. The female example 
from the State of Panama is more distinctly marked with dark 
brownish spots than any I have seen from North America, but 
specimens from Columbia in my own collection are exactly like those from New York.” (P. 234.) 
It seems strange that so distimjt a species as H. ohliqua should be regarded by Mr. Druce as 
3 synonym of H, hinndata. 
The type of “L. ollvata''^ is in the Cambridge Museum. 
S. Mis. 50 IG 
