STATE AGRICULTURAL SOCIETY. 
481 
SUPPLEMENT. 
at the mouth—several of the bot-flies being destitute of any 
opening at the mouth and taking no nourishment after they 
reach their perfect state. Nine species have been described by 
different authors as pertaining to this genus, all of them belong¬ 
ing to America save one which occurs in India. Nothing, how¬ 
ever, appears to be known of the habits of the flies of this genus, 
except that the larvae of two of them, which are found in the 
state of Georgia, reside under the skin of the rabbit. And this 
species appears to be different from any of those heretofore de¬ 
scribed. It is a large thick-bodied fly nearly three-fourths of an 
incli long, its head, thorax and abdomen of the same width, with 
the abdomen but little longer than wide and its smoky brown 
wings of about the same length with the abdomen and held 
together flat upon it. Its thorax is covered with whitish hairs 
which are more dense upon the sides, where is a large black dot. 
Its face is white with a large black dot upon each cheek, and the 
last segment of its abdomen is clothed with whitish hairs. 
The dirt in the box had a depth of about two inches and the 
worm had penetrated to its bottom and there changed to a pupa, 
its outer skin becoming dry and hard and forming the outer cov¬ 
ering or pupa-case of the insect. 
This pupamum is 0.80 long and 0.40 broad, nearly cylindrical, though flat¬ 
tened anteriorly in the region of the breast, and rounded at both ends. It is 
of a tough crustaccous substance, as thick and hard as the shell of a chestnut, 
and its whole surface is rough like shagreen, being crowded with elevated 
black shining points, to which a coating of dirt adheres as though it were 
glued thereto. It does not show any elevated transverse ridges, like those 
upon the larva, but six impressed lines or sutures are very perceptible, divid¬ 
ing it into seven segments which are mostly of equal length. The anterior one 
of these segments breaks off obliquely at its suture, to enable the fly ts escape, 
the piece thus separated being a large roundish or egg-shaped scale, more broad 
than long, being 0 30 broad, and this scale shows upon its inner surface two 
curved elevated lines, which are sutures dividing it into three segments of 
nearly equal length; and at its anterior end is a small fourth segment marked 
by a strong depression in the surface. We thus find a total ol ten segments in 
the pupa-case, the same number which we saw in the larva, those representing 
the head and thorax being much changed and soldered together into a single 
flattish piece instead of the circular rings which they formed in the larva. 
The small anterior segment has a wide shallow notch on its forward edge, on 
each side of which, exteriorly, is a round tuft or button composed of a mass 
TAg. Trans.] EE 
