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., during 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 Tortricidse, 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 palpi> 

 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. 



(Hyper etis 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 span between the leaves, and the moth appeared at Providence 

 in the breeding cage May 15 of the following year. 



