VERMIN IN THE SKIN. 



Hcematopinus Vituli, (Louse of Calf, Fig. 195). 



Chestnut; head, sublyrate; abdomen, long, and .sub- 

 cylindrical, ashy white; legs very thick. Length, 1 to 1^. 



Kemarkable as being parasitic on the young, and not on 

 the mature animal, having been found only on the calf, never, 

 so far as J am aware, on the ox. 



Hcematopinus Asini, (Louse of Ass, Fig. 196). 

 Ferruginous; abdomen large, light tawny -yellow white, 

 with horny excrescences on each side, surrounding the spira- 

 head very long, deeply sinuated behind the antennae, 

 mgth, 1 to If. 



Common upon the ass, frequenting the mane and back 

 is found also upon the horse. 



Hcematopinus Suis, (Louse of the Swine, Fig. 197). 

 Dusky ferruginous; abdomen, grey or ashy-yellow; flat 

 id membranaceous, with a black, horny excrescence sur- 

 mnding each spiracula, which is white; legs long, thick; 

 femur, banded ; tibia very abruptly clavate, dark at the apex. 

 Length, 1^ to If. 



This species is found in great numbers on swine, more 

 especially those freshly imported from Ireland. 



Hcematopinus Piliferous, (Louse of the Dog, Fig. 198). 



Testaceous; abdomen cadaverous, thickly covered with 

 pale fuscous hairs. 



Found on the dog, but not of common occurrence ; found 

 also on the ferret. 



Hcematopinus Stenopsis, (Louse of the Goat). 

 Testaceous, unicolored; abdomen elongated, oval; with 

 thinly set long hairs. Length, 1. 



