134 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
Stretch, is nocturnal in its habits, and in the day-time may be found 
crowded into holes ami cavities (generally in families), and often in 
places where it seems scarcely possible for them to penetrate. It is 
full-fed abont the end of June, and the imago is disclosed during the 
latter part of July. The cocoon is composed chiefly of the hairs of the 
larva, and, although of considerable density, is but slightly bound to- 
gether with silk. 
Larva. — Head dark brown, very large ; thoracic legs reddish brown, abdominal legs 
tawny. Body stout, depressed, densely clothed with moderately long rich-brown 
hairs of uniform Length, gi\ ing the larva a brush-like appearance. The sides of the 
body, as well as the head and anal segment, have long silky scattered hairs of a tawny 
yellow. Length, 1.50 inches. (Stretch.) 
Moth. — Bicolorous, bad-yellow and vermilion. Fore wiugs with rive subhyaline 
smoky, transverse bands, margined with black, less oblique than usual. The basal 
band eonsists of a small costal spot and an outer median large round spot. Second band 
regularly curved, third hardly oblique, waved. The outer ones nearly parallel with 
the outer margin. Hind wings transparent except on the pilose inner margin, which 
is tinged with vermilion. Abdomen above, iucludiug the base of the anal tuft, ver- 
milion. Beneath, pale buff, the costal spot re-appearing. On the costa of the hind 
wiugsnear the apes are two dusky square spots, which do not appear on the upper 
side. Legs ringed on the femora and tibiae. One ring on the end of the tibiae, and 
each tarsus aunulated on the basal half with smoky pale brown. Femora vermilion 
beneath. Expanse of wings, 2 20 inches. 
185. Halesidota tessellata (Abbot and Smith). 
Found August 29, 1872, on laurel oak, a yellow, white tufted Hal- 
esidota larva. Others that were found on hickory are probably of Uw 
same species. Both, when full grown, are mouse gray, with a darker dor- 
sal ridge. Two long black pencils near posterior end and four near the 
head, on joints one and two, and six shorter and thinner white ones. 
(Riley's unpublished notes.) 
1»6. Org yia gulosa Hy. Edwards. 
The moth closely resembles the Californian 0. vetusta. 0. gulosa is 
always much smaller than O. vetusta; the white spot near the inner 
angle is less distinct and the lines on the fore wings are invariably 
more clouded and confused. Expanse of wings, .7/3 inch. The cater- 
pillar feeds on the oak in California, while 0. vetusta feeds on the lupine. 
(H. Edwards.) 
The larva. — Ground color, as in 0. vetusta, velvety black; head jet black, without 
the yellow frontal line, and with the mouth-parts dull yellow; secoud segment with 
the usual complex series of black hairs. Between them are two dark, brick-red 
tubercles: third has two orange central tubercles and two brick-red ones on the 
sides; fourth has a black central tuft, with two brick-red ones on the sidesof it : the 
fifth, sixth, and seventh have each a white central tuft, with two brick-red tubercles 
on each side; the eighth, ninth, and tenth each with six brick-red tubercles: the 
eleventh has a central tuft of black hairs, directed posteriorly, with two brick-red 
tubercles. Anal segment black. From the base of all the red tubercles arise bundles 
of black and white hairs, almost wholly white on the sides. Bet ween the seventh and 
eighth segments are some bright orange dashes, which marks are also indistinctly seen 
on the anterior segments. Food plant. Qaercas, of various species. (H. Edwards.) 
