THE SHORT-NOSED CATTLE-LOUSE. 



103 



head is blunth^ rounded in front, and broadest behind the 

 feelers w^hich are as long as the head. Eyes very small and 

 difficult to detect. The thorax is very broad, much broader 



Fig. 72.— Short-nosed cattle-louse; male. Fig. 73. — Short-nosed cattle-lonse; fe- 

 and tip of abdomen from below. Greatly male abdomen from below, and egg. 

 enlarged. Original. Greatly enlarged. Original, 



than long, and widest where it joins the abdomen. The 

 head, which is wedge-shaped behind, fits into a triangular 

 indentation of the anterior margin of the thorax, the abdo- 

 men is strongly segmented. The louse is light-brown; the 

 posterior half of head, the thorax and legs are darker; the 

 abdomen bluish-gray. The elongate oval eggs tapering at 

 the lower end, and having a cap-like lid at the upper end, 

 are deposited on the hairs close to the skin. Fig. 72 shows 

 the male louse with enlarged tip of abdomen seen from be- 

 low, and fig. 73 the corresponding part of a female and an 

 ^gg fastened to the hair of a cow. 



This parasite is especially troublesome on the neck and 

 shoulders of the infested animals, and these parts are fre- 

 quently worn bare of hair by effi^rts to dislodge the irritat- 

 ing intruder. 



It is not easily dislodged if once settled in large numbers 

 upon an animal. Veterinarians seem to prefer Stavesacre 

 a,s a remedy. Kerosene-emulsion, or even a mixture of kero 



