42 



STATE BOAKD OF AGRICULTURE. 



Gr. stylifer Nitzsch. A common parasite on 

 Turkeys. 



Q. falcicornis Nitzsch. Parasitic on the Pea- 

 cock. 



LIPEURUS Nitzsch. 



L. tadornae Denny. Parasitic on the Shell- 

 drake. 



L baculus Nitzsch. The most common of the 

 biting lice of Pigeons. 



L. squalidus Nitzsch. A common parasite on 

 ducks of all kinds. 



L. polytrapezius Nitzsch. Parasitic on Tur- Fig. 12.— Turkey louse, Goniodes 



lievs stylifer; much enlarged. 



L. variabilis Nitzsch. Occurs on domestic fowls. 



TRICHODEOTES Nitzsch. 



T. subrostratus Nitzsch. Biting louse of the Cat. 

 T. latus Nitzsch. Biting louse of the dog. 



Fig. 13. 



Fig. 14. 



Fig. 1:5.— Cow-louse, Trichodectes scalaris; much enlarged. 



Fig. 14.— Dog-louse and sheep-louse, Trichodectes latus and 

 spharocephalus, much enlarged. 



T. pilosus Giebel. Parasitic on the horse, mule 

 and ass. 



T. parumpilosus Piaget. Found with the pre- 

 ceding. 



T. scalaris Nitzsch. Found commonly on Cattle and sometimes so abundant 

 as to give cows a mangy appearance. 



