Tech. Series 15, Bureau of Entomology, U. S, Dept. of Agriculture. 



PLATE IV. 



IXODOIDEA, OR TiCKS, OF THE UNITED STATES. 



Fig 1 —Ixodes pratti, shield of female, capital um of female, tooth on rostrum, stigrnal plate of 

 female, and coxa I. Fig. 2.— Ixodes angudus, coxse, stigmal plate, capitulum, and shield, ot 

 female. Fig. Z.— Ixodes pratti, stigmal plate of nymph. Fig. i.— Ixodes pratti, stigmal plate 

 of male and tarsus I. Fig. 5.— Ixodes pratti, hypostome. Fig. 6.—I:codes dentatus teeth below 

 on rostrum, coxeb, capitulum. and shield, of female. Fig. 7— Ixodes sculptus, shield and capit- 

 ulum of female. Fig. S.—Hxmaphysalis leporis-palustris, capitulum of male. i<ig. 9.— i.coaes 

 smlptus, coxse of female. Fig. 10.— Hxmaphysaiis leporis-palustris, tarsus I capitulum and 

 shield stigmal plate, and coxa I, of female. Fig. U.— Hxmaphysaiis chordeilis, shield and 

 capitulum, coxse I and IV, tarsus IV, and stigmal plate, of female. (Original.) 



