426 
LEPIDOPTERA. 
is a bunch or hump, also of a red color ; along the hack 
are several short black prickles ; and the hinder extremity 
tapers somewhat, and is always elevated at an angle with 
the rest of the body, when the insect is not crawling. The 
full-grown caterpillars measure one inch and a quarter, or 
rather more, in length. They rest close together on the 
twigs, when not eating, and sometimes entirely cover the 
small twigs and ends of the branches. The early broods 
come to their growth and leave the trees by the middle of 
August, and the others between this time and the latter part 
of September. All the caterpillars of the same brood de¬ 
scend at one time, and disappear in the night. They con¬ 
ceal themselves under leaves, or just beneath the surface 
of the soil, and make their cocoons, which resemble those 
of the unicorn Notodonta. They remain a long time in 
their cocoons before changing to chrysalids, and are trans¬ 
formed to moths towards the end of June or the beginning 
of July. Mr. Abbot * states that in Georgia these insects 
breed twice a year, the first broods making their cocoons 
towards the end of May, and appearing in the winged form 
fifteen days afterwards. This Notodonta is a neat'and trim 
looking moth, and is hence called concinna (Plate VI. Fig. 
11) by Sir J. E. Smith. It is of a liglit brown color ; the 
fore wings are dark brown along the inner margin, and 
more or less tinged with gray before ; there is a dark-brown 
dot near the middle, a spot of the same color near each 
angle, a very small triangular whitish spot near the shoul¬ 
ders, and several dark-brown longitudinal streaks on the 
outer hind margin ; the hind wings of the male are brown¬ 
ish or dirty white, with a brown spot on the inner hind 
angle ; those of the other sex are dusky brown ; the body 
is light brown, with the thorax rather darker. The wings 
expand from one inch to one inch and three eighths. 
Every person who has paid any attention to the cultiva¬ 
tion of the grape-vine in this country must have observed 
* Insects of Georgia, p. 169, pi. 85. 
