28 
1884 we reared it from the Oak in Providence, the moths in confine- 
ment appearing May 3 to 13 of the following spring. 
During the season of 1886 we found the larvae both on the Oak and 
on the Aspen at Brunswick, Me., daring the last week in August (the 
25th to 31st). It disfigures these trees by binding the leaves together, 
where it occupies a gallery in the mass of excrement filling the space. 
It weaves a slight, but quite consistent, oval, flat cocoon between the 
somewhat crumpled leaves ; the moths appeared in the breeding cages 
from May 15 to 20 ; at first sight the moth resembles a Tortrix, the 
wings being wide and broad at the end, and the markings plain ; it is 
very different in appearance from the moth of the other species we have 
mentioned, which is white, with longer, narrower wings. The abdomi- 
nal spine of the chrysalis is also very peculiar in shape. 
Descriptive. — Larva . — Body flattened. Head wide, slightly narrower than the 
prothoracic segment ; dark brown; prothoracic shield dark brown, slightly paler than 
the head. Body behind pale livid greenish flesh-colored ; no dorsal setiferous warts, 
but on each side of each segment are two dark warts of unequal size giving rise to 
long hairs ; below them are two smaller, paler, less conspicuous warts. Supra-anal 
plate large, broad, rounded, blackish, with five setiferous warts around the edges of 
the plate. All the legs concolorous with the body. Length, 12 mm . 
Pupa . — Of the shape of the Tortricidae, being unusually stout and of a mahogany 
brown color. Abdominal segments peculiar in having a single, finely crenulated 
ridge passing dorsally and laterally around the front edge of the segment ; there are no 
teeth or spines, but a rough surface on the ridge with confluent granulations The 
tip is peculiar, the last segment being conical, with a stout spine (cremaster), which 
is rounded, a little flattened, and ending in two forks, from the sides and ends of which 
arise in all 6-8 long bristles, which stick into the silken lining of the rather slight 
cocoon in which it transforms. Length, 7 mm . 
Moth . — Recognized by its large size, broad square wings, and long slender palpb 
curving backwards high over the head. Head, thorax, and fore wings tawny gray, 
with a line of fine dark scales on the base of the antennae and on the upper and un- 
der side of the last joint of the palpi. Fore wings uniform tawny gray, mottled with 
fine blackish scales ; no distinct markings except a dark diffuse discal dot. Fringe gray. 
Hind wings and abdomen as well as the legs shining pale tawny gray, much lighter 
than the fore wings ; beneath of the same color, except that the fore wings are some- 
what dusky except on the outer edge and outer half of the costal margin. Expanse 
of wings 20 mm . 
THE BEECH SPAN-WORM. 
(. Hyperetis nyssaria Smith and Abbot.) 
Although the Alder is one of the food trees of this not uncommon 
inch-worm, it is known to live on the Beech. The specimen reared from 
the Alder by us is described below. 
I have reared this moth from a large span-worm found on the Alder 
September 6, at Brunswick Me., which exactly resembled a small twig 
of the same shrub. It pupated September 20, in a broad flattened oval 
cocoon spun between the leaves, and the moth appeared at Providence 
in the breeding cage May 15 of the following year. 
