86 REPORT OF NEW JERSEY STATE MUSEUM. 



H/EMATOPINUS Leach. 



H. piliferus Burm. The sucking-louse of the dog. 



H. pedal is Osborn. Occurs on the feet of sheep be- 

 low the wool and easy to destroy with any good 

 sheep dip. 



H. eurysternus Nitzsch. Short-nosed ox-louse. This 

 and the following may be reached by the crude 

 petroleum brushing recommended for the biting 

 lice. 



H. vituli Linn. Long-nosed ox-louse. 



H. urius Nitzsch. The hog-louse: our largest spe- 

 cies; sometimes very common and conspicuous. 



H. asini Linn. Found on the horse and ass. 



H. spinulosus Nitzsch. Found on the common rat. 

 H. acanthopus Burm. Infests field mice. 

 H. ventricosus Denny. Found on hares and rabbits. 

 H. sutu rails Osborn. Infests chipmunks and ground squirrels. 



Fig. 31. Body-louse, 



Pediculus vestimenti; 



greatly enlarged. 



