Injurious to Man. 



47 



larval or ' grass lice ' stage will attack any vertebrate animal that 

 comes its way. It is in this stage that it is such a great pest to 



Fig. 21. 



Margaropus annulatus, Say. Ventral view of male. 

 Enlarged. (After Neumann.) 



man." Neumann and other authorities do not, however, record 

 this tick as biting human beings. 



Fig. 22. 



Margaropus annulatus, Say. ? , Ventral view of Capitulum, 

 greatly enlarged. (After Neumann.) 



The larval stage of Margaropus annulatus decolor atus, Koch, 

 a very widely distributed cattle-tick in Africa, is also said to 

 attack man. 



