186 FIFTH REPORT OP THE ENTOMOLOGICAL COMMISSION. 
The moth. — Of a uniform oloai fawn-color, without the usual spots aud speckles 
t in other tpeoiet of the gonna; ■ banal, brown hair-Una beut outward acutely 
on the modi an vein ; a broad, diffnaa, dark median band oommon to both wings. The 
extradiaoaJ line is dark, finely scalloped, curved outward below tin- co-,ta,and sweep- 
ing inward below the tirxt median venule: beyond this line both wings are deeper 
lawn-color. At a little distanee below the costa, and nearer the extradiseal line than 
the outer edge of the wing, is a conspicuous angular, clear, white spot. Fringe dark, 
the scallops tilled with whitish scales. Hind wings like the anterior pair, though the 
extradiacal line is not sinuous, but curved regularly outward. Beneath, paler than 
above; the median band is distinct, and the extradiseal line more or less so ; the tints 
are much u above. The wings expand 1.40 inches. 
360. Thtrina fervidaria Hiibner. 
This moth was bred by Abbot in Georgia from the silver bell tree 
{Halesia diptera), but Dr. Riley has reared it from the live oak in 
Florida. This is our most common species of the genus in the Eastern 
United States. It is at once known by the much-speckled wings and 
the ocherous-bordered, blackish liues. It varies greatly in the distance 
apart of the two liues, which in the fore wing are in some twice as wide 
apart as in others. The species is exceedingly variable. 
At Esquimau, Vaucouver Is., "all the oaks were stripped by the 
larvre of Therina fervidaria, and their trunks and branches were 
paved with the handsome Geometrid moths in September." (James 
J. Walker, Ent. Month. Mag., Aug., 1888, p. 65.) 
Larva. — Head scarcely as wide as the prothoracic segment, the latter not so wide 
as the body behind. Body of uu'fortn thickness, with no tubercles. Head smooth, 
slightly divided above, rounded and smooth : pale, with seven black dots on each 
side. Body aud head pale yellowish ash ; with two dorso lateral blackish longitudi- 
nal stripes, and another stripe below on each side : the body elsewhere with fine, more 
or less interrupted, black lines, and some deep ocherous ones. Between the two 
dorso-lareral lines are four more or less interrupted fiue lines. Length 38 to 40 mm . 
Pupa. — Rather slender, whitish, slashed and spotted with brown. (Described 
from Abbot's manuscript drawing.) 
Moth. — Pale ocherous : head and front of the thorax with the antenna? deep ocher- 
ous. Wings densely speckled with smoky spots ; well angulated, the angle on the 
tore wings often acute, on the hind wings forming a slight tail. Outer line dark 
brown, bordered externally with ocherous. Inner line a little curved, and situated 
either on or a little withiu the inner third of the wing. Discal dot dark, distiuct, 
sometimes wanting on the hind wings. Outer line sinuate or zigzag, varying greatly, 
the angle on the first median venule being slight or very marked on both wings. 
Od the hind wings a single line only. Beneath, much paler ; the lines re-appear, but 
are diffuse and smoky. Expause of wings 1.50 inches. 
261. Therina endropiaria (Grote and Rob.). 
This moth has been raised from caterpillars found feeding on the oak 
at Amherst, Mass., by Mr. L. W. Goodell. It pupated September 4, 
just beneath the surface, and the moth emerged May 19 following 
(Can. Ent., xi, 194). It has also been bred by the U. S. Entomologist 
from specimens which I collected in April at Crescent City. Fla., from 
the live oak. The larva spun a slight cocoon between leaves at Wash- 
ington April 27, and the moth emerged May 19. 
