79 
THe Wuitr FRINGE SLUG. 
(Selandria ? sp.) 
The White Fringe tree (Chionanthus virginica ), in its season one of the 
most exquisite of flowering shrubs or small trees, is subject to the an- 
nual attack of a medium-sized, spiny slug that pertorates the leaves 
with small round holes after reducing the greater number of them to 
mere lace-work. This species is single brooded, but the parent flies 
appear irregularly and larve may often be found from the latter part 
of April until the end of May, in the interval seriously disfiguring, 
often killing, the foliage. It lives on the under side of the leaves and 
feeds chiefly at night. Full grown larve from 9 to 12™™ long, 3"™ in- 
diameter across the thoracic segments, form cylindrical, nearly equal 
throughout, or tapering slightly backward from thorax. Color green- 
ish-white, surface very rugose, dorsum and sides quite thickly beset 
with bifid spines, those on dorsum jet black, arising from velvety black 
spots and being largest in the subdorsal region; lateral spines pale. 
Head about one-half the diameter of thorax, almost spherical, jet black, 
immaculate. Legs, 22 in number, concolorous with general surface, 
and unusually well developed. With me it has proved a difficult species 
to rear, and 1 confined the larvie for several successive seasons without 
getting asingle fly, and last spring but two from a large number of 
larve developed. In the rearing cage, after ceasing to feed, the larvie 
desert the leaves and wander restlessly around the cage, many of them 
dying without entering the ground. The few that transform inclose 
themselves in very brittle, nearly spherical cells ‘about an inch below 
the surface, and as with most other saw-fly larve that enter the ground 
brook no disturbance during the quiescent period. The two flies that 
1 succeeded in rearing came out about the middle of April. 
Syringing the under sides of the leaves with a strong infusion of 
white hellebore, or with Paris green in liquid suspension, wil! kill the 
pests, with but little detriment to the foliage. 
DESCRIPTION OF THE LARVA AND PUPA OF PALTHIS ANGULALIS. 
Among the insects trapped last spring in loose cotton around the 
trunks of apple trees were a considerable number of a dingy-colored 
noctuid larva, about 1 centimeter in length by 4"™ in diameter, of nearly 
equal width throughout, the segments appearing somewhat hunched to- 
gether. Surface rough, of an earthy-brown color, palest on dorsum. 
Under the lens, especially after being dropped in alcohol, a tinge of 
green appears, and the paler cast of the dorsal surface is resolved into 
a spreading V composed of minute white stippling. This is especially 
pronounced on the posterior segments, where the angle of the V is de- 
veloped into a papillate elevation. Head small, much retracted, dark 
brown; legs and prolegs, and also to some extent the entire ventral sur- 
face, verdigris green, These larvie were found from the Ist to the 5th 
