94 



SUCKING-LICE. 



is simply indicated by a line enclosing a still hungry parasite. 



As the dogs infested with such ticks generally drop them 



in and near their sleeping places, these become soon badly 



Fig. 63.— Tick from Pocket- 

 gopher, adult. Enlarged. Original. 



Fig. 64. — Tick from Pocket-go- 

 pher, young. Enlarged. Original. 



invaded with the small and hungry ticks, sometimes called 

 "seed-ticks," and in this case they greatly torment the animals 

 in the vicinity of such breeding places. A thorough and re- 

 peated sprajnng with kerosene oil will kill these pests. The 

 ticks were also found upon horses and other mammals, and 

 even upon a rattlesnake. 



Manj' other species occur in Minnesota. Some are quite 

 small, as the one upon the pocket-gopher illustrated in figs. 

 63 and 64, \vhich shows the adult and the young six-legged 

 larva. 



All the parasites described thus far are not true insects, 

 differing from them by the possession of eight legs when ma- 

 ture, by never possessing any wings, and by numerous other 

 characters not necessary to mention in this place. 



F. SUCKING-LICE. 



(Pedicidi.) 



This family of insects includes a number of unsavorv- par- 

 asites that infest man and quadrupeds. Though those at- 

 tacking man are not usually mentioned in polite society it is 

 sometimes not only important to describe them, but even 

 necessary to give remedies to reduce their numbers. Of course 

 the time has passed wheninsectsof this or of a similar charac- 



