THE SHORT-NOSED CATTLE-LOUSE. 103 
head is bluntly rounded in front, and broadest behind the 
feelers which 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-louse; 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 
egg 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 efforts 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 
asaremedy. Kerosene-emulsion, or even a mixture of kero 
