Cooley & Kohls: Argasidae of N. America, etc. 



69 



COMPARISON OF O. TURICATA AND O. PARKERI 



Figs. 27, 28, 29, 30, 31, 32, 33. and 34 



O. turicata and O. parkeri are rather closely related and yet in most in- 

 stances are readily separated by their mammillae and hypostomes. In these 



Fig. 27. Female of Ornithodoros luricala (Dugcs) on the left, and female of O. 

 parfycri on the right. 



