Bul. 72, Bureau of Entomology, U. S. Dept. of Agriculture. PLATE III. 
THE NORTH AMERICAN FEVER TICK AND OTHER SPECIES. 
Fig. 1.—Margaropusannulatus, male. Fig. 2.—Hemaphysalis leporis-palustris, female. Fig. 3.—Stig- 
mal plate of Margaropus annulatus, male. Fig. 4.—Mouth parts of Ixodes cookei. Fig. 5.—Stig- 
mal plate of Rhipicephalus sp., male. Fig. 6. —Stigmal plate of Amblyomma maculatum, female. 
Figs. 1, 2, much enlarged; fig. 4, more enlarged; figs. 3, 5, 6, highly magnified. (Original. ) 
