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. 



pig. 12. 



Fig. 13. 



Pig. ii—Goniodes stylifer, rfrom a turkey), ventral view: a. 

 mouth parts; b, antennae; c, 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. _ ^„„4-^/i +„ 



Yig. 12.— An egg of the turkey louse. The egg is cemented to 

 the barb of the feather at a. , ^ ^ , 



Yig. 13. — Lipeurus infuscatus, (from a hen), female, 

 parts; b, abdomen. 



mouth 



