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



Plate X. 



IXODOIDEA, OR TICKS, OF THE UNITED STATES. 



Fig. l.—Ih niHiri iilnr hifurcatus, nymph, coxae, shield, venter, palpus, stigmal plate, and capitulum. 

 Fig 'Z.—lLriiiniiliiimlis lejMris-palustris, male, and rostrum of female beneath. Fig. 3. — Dcrma- 

 centor rnn'uhilis. engorged female, above and below. Fig. 4. — Dermacentor variabUi.^, male, 

 above and beneath, and stigmal plate of female. Fig. o.—Ambiyomma americanuni, nymph, 

 above and below. Fig. 6. — Hxmaphysalis leporis-paludris, fresh and engorged females. 

 Fig. 7. — Margarojnis annulatus, capitulum of female, above and beneath. Fig. 8. — Margaropus 

 annulatus, capitulum of male, above and beneath. Fig. 9. — Dermacentor occidentalis, male. 

 Fig. 10. — Dermacentor retictdatus, male. Fig. 11. — Dermacentor albipictus, male. (Drawings by 

 the late Dr. George Marx.; (Original.) 



