340 FIFTH KFPORT OF THE ENTOMOLOGICAL COMMISSION. 
As early as 1827 Harris found a larva on the black waluut. He says: 
u It is remarkable for the squeaking sound which it emits, apparently 
by rubbing the rings of the anterior part of the body together." This 
specimen entered the earth to pupate as early as August 7. 
Larva. — Two inches long, .22 inch broad at the eighth segment, .14 inch at the 
fust. Read large; longest diameter, twice that of the first segment; apex quite 
pointed; color light green, with white lateral granulations. Body elongated, slender, 
tapering gradually from the seventh segment to the extremities; light apple green, 
granulated regularly on the anu illations with white. Lateral bauds, seven, lighter 
green, approaching white, and made the more conspicuous from the increased size of 
the granulations toward the broadest part of the baud, each anuulation adding to it 
a single granulation; extending over two segments and nearly reaching to the vas- 
cular Hue. Caudal horn sleuder ; .'20 inch long, quite rough, with numerous acute 
granulations, which are more prominent than those of the body. 
Pupa. — Male: 1.20 inches long, .40 inch broad. Dark brown, almost black, nearly 
plane veutrally, abruptly rouuded auteriorly, and gradually posteriorly. Head-case 
with two conical, granulated, divergent projections between the bases of the antennas- 
cases, and two pairs of smaller ones between the eye-cases, and a pair on the anterior 
leg-cases. Eye-cases with a tubercnlated ridge. Autenna>cases quite prominent, 
with a granulatiou on each joint. Tongue-case buried and not visible, the leg and 
wing cases meeting at their tips. Stigmata, except the first, which is nearly closed, 
quite oval. The seventh, eighth, and ninth segments with deep incisures, angnlated 
posteriorly, acutely granulated, and encircled on their posterior margin with a row 
of spines, sub-obsolete inferiorly and superiorly. The tenth, eleventh, and twelfth 
segments contracted laterally and flattened inferiorly, the eleventh segment spined 
on the carination. The terminal segment ending in a broad, flat, rugose, truncate 
projection. (Lintner.) 
The moth.— Differs from the other species iu having no eye-like spots on the hind 
wings. 
8. The Virginia tiger moth. 
Spilo80»ia virginica (Fabricius). 
Order Lepidoptera; family Bombycid^e.' 
Occasionally devouring the leaves of the butternut, a very hairy, deep yellow 
caterpillar, with a black head and body, the latter mottled with black; changing to 
a thick chrysalis within a cocoon, where it remains until the following June, when, 
it appears as a white moth. 
This omnivorous caterpillar, commonly called "the yellow bear," is 
known to feed on the butternut, grape vine, currant, gooseberry, grasses, 
and various garden vegetables, and we have found it from the first to 
the middle of September in Maine feeding on the buckthorn and also 
the pitch-pine. According to Harris there seems to be two broods of 
caterpillars and two of the moths. The caterpillars, he states, "are to 
be found of different ages and sizes from the first of Juue till October. 
When fully grown they are about 2 inches long, and then creep into 
some convenient place of shelter, make their cocoons, in which they 
remain in the chrysalis state during the winter, and are changed to 
moths in the months of May or Juue following. Some of the first 
broods of these caterpillars appear to come to their growth early in 
summer, aud are transformed to moths by the end of July or the begin- 
