GEOLOGICAL SURVEY OF THE TERRITORIES. 741 



and stont, hind pair just reaching edge of body. Claws long and curved, 

 as usual. 



Length, .26 inch ; bretrdth, .15 inch. 



It is nearly allied in form to Argas Persicus, (see Plate 33, Fig. C, D., 

 lusectes Apteres, Walkenaer et Gervais,) but differs in the edge of body 

 being more finely granulated, and in the pits posteriorly being arranged 

 in radiating lines. The Persian Argas is extremely troublesome to 

 travelers in the East, and the American species is noticed here as it 

 was found among a number of Ixodes bovis taken by Mr. G. W. Belfrage 

 from cattle in Texas. 



