40 BOARD OF AGRICULTURE. 
which are open at the top, while the small end pears a cluster 
of bristles. The habits and treatment are too well known to 
need further description. 
The Body-louse of Man (Pediculus corporis DeGéer). 
Figure 31. 
This species very closely resembles the last, but is usually 
larger. It attaclies itself especially to the clothing, and at- 
tacks various parts of the body. It attaches its eggs chiefly 
to the clothing which it frequents, especially Figure 31. 
along the seams, and when the clothing is sel- : 
dom changed, as often necessarily happens in 
time of war, it increases rapidly and becomes 
a great source of annoyance. Many unfortu- 
nate soldiers, who were confined in the south- 
ern prisons and prison-pens during the late ' An 
war, can testify to the abundance of this par- é 
asite under such circumstances. Nor were 
the ordinary camps free from them, especially during active 
campaigns. 
The Orab-louse (Phthirius pubis Leach). Figure 32. 
In the genus Phthirius the thorax is broad and not distinct 
from the abdomen, which is flatand has eight segments, the 
first one being composed of two united. Figure 32. 
The first pair of legs are terminated by 
slender tarsi, not changed to grasping 
claws, but the claws of the other two 
pairs are large and strong. 
This species lives among the hairs of 
the pubic regions of man, and also, 
though much less commonly, upon the breast, arm-pits, in the 
beard, eye-brows, and also upon the head. It sometimes also 
clings to linen and clothing, and, not unfrequently, may be 
found in the beds of those persons harboring them. They 
may be destroyed by simple ointments and unguents, or by 
the sulphuret washes described above. 
Figure 31.—Body-louse (Pediculus corporis DeGé _), greatly magnified. From 
Packard’s Guide. 
Figure 32.—Crab-louse (Phthirius pubis Leach), much enlarged. From Pack 
ard’s Guide. Digitized by Microsoft® 
