Bul. 5, new series, Div. of Entomology, U. S. Dept of Agriculture. PLaTe V. 
THE CATTLE TICK (Boophilus bovis Riley.) 
1, Front foot, showing single spur; 1a, Supposed sense organs: 2, Hind foot, showing double spur 
3, Head of female; 4, 4a, 4b, 4c, Female ticks, natural size, shown at different stages of feeding: 
5, Egg; 6, Young tick; 7, Dorsal surface of the mouth parts of female—a, mandible, b, labrum, 
c, palpus, d, mouth ring, e, spots covered with papille: 8, Labium and mandibles; Sa, Papille 
enlarged; 9, Mandible-X-Busk’s organ, use unknown; 10, Mouth parts of youngtick. (From 
Curtice, Bul. 24. Tex. Ag. Ex. Sta.) 
