PARASITOLOGY. 43 
dust than one not lousy. The effect upon the older 
birds is not so severe as upon the younger ones, but 
it is shown in condition of flesh and low production 
of eggs. The irritation is sometimes so severe that 
hens desert their nests. Their combs may become 
dark. Birds unable to rest day or night become ema- 
ciated and die. 
To find the lice, part the feathers; the lice will be 
found running over the skin or bases of the feathers. 
A favorite location for the lice is under the wings 
where the temperature is warmer, although they may 
be found on any part of the body. 
Fig. 11.—Gonicdes stylifer, (from a turkey), ventral view: a, 
mouth parts; b, antennae; ¢, legs, provided with hooklets on the 
free extremity of the last segments. To the right of the head is a 
line indicating the actual size of the louse. 
Fig. 12—An egg of the turkey louse. The egg is cemented to 
the barb of the feather at a. 
Fig. 13.—Lipeurus infuscatus, (from a hen), female; a, mouth 
parts; b, abdomen. 
