OAK-BORERS. 59 
Fitch thinks it probable that it bores into the oak. He describes it as 
a moth smaller in size thau P. robinicc, with thin and slight transparent 
wings, which are crossed by numerous black lines, the outer margin only 
of the forward pair being opaque and of a gray color ; the hind wings 
of the male are colorless, with the inner margin broadly blackish and 
the hind edge coal-black. 
Mr. Lintuer has found the lar v T a burrowing in the black oak. The moth 
appeared April 29th. The male is about half as large as the female. 
"This species is smaller than rebinice, the female expanding 46 mm or 
47 mm , the male about 10 mm less. The male hind wings seem translucent, 
but on holding them obliquely in certain lights the yellow tint may be 
seen plainly. This smaller and rarer species occurs also in Texas. It 
is freer from reticulations and more transparent than any other form." 
(Bailey, Bull. No. 3, Div. Ent., Dept. Ag., 55.) 
Larva. — Length an inch and a half. Pale green, with a darker green dorsal stripe, 
bordered faintly with yellow. Head flat, sub triangular, dark brown clouded with 
black. First segment with two brown spots extending across it, narrowed laterally, 
and of nearly the length of the segment medially, where they unite to inclose on the 
dorsal line an elongate-elliptical green spot. The anterior segments are flattened, 
and broader than the following, which gradually diminish in breadth toward the 
posterior end. The segments are marked dorsally with four rose-colored elevated 
points, the trapezoidal spots of Guenee; on the 10th and 11th segments they form a 
quare. A similar spot is present above each stigma, a smaller one below, and an- 
other in front — each of these bearing a short brown hair. The stigmata are oval, 
orange-colored, centered with dark brown. The legs are tipped with chestnut brown, 
and the prologs armed with brown plantae. — (Lintner, Ent. Contributions, iv, 135.) 
5. Cossula magnlfica Bailey. 
(PI. ii, figs. 1-3.) 
An account of this fine moth and its transformations is published in 
Papilio (ii, 93) by Dr. J. S. Bailey. The larvae were found by Mr. 
Koebele boring in species of oak and hickory near Tallahassee, Fla. 
A single live-oak was observed standing in an open field containing 
many larvae, their debris, resembling saw-dust, being distributed over 
the ground around the roots of the tree more than six inches in depth. 
" At the period of pupation the larvae, as is customary with the Cossidae, 
takes its position near the surface of the bark. The tunneling is usu- 
ally conducted near the surface, from one-quarter to one inch beneath 
the bark. After the imagines emerge their pupa cases are left protrud- 
ing through the bark." 
Pupa. — The long testaceous pupa-case is provided with an irregular series of five 
tuberculations on each side of the anus. (Bailey.) 
Moth. — Size small ; male antennae bipectinate to the tips, the inner series one-third 
the length of the outer pectinations; hind tibiae pilose ; wings broad, the front pair 
rounded at the apices, costa with dark dots; fuscous gray, smooth, with indistinct 
fragmentary reticulations. A light brown patch covers the outer edge ; before the 
'patch is a light gray subterminal shade. Hind wings blackish brown ; front yellow- 
ish; thorax light gray ; abdomen dark gray; expanse of wings, 36 mm . (1.44 inches). 
<Bailey.) 
