4 4a 



Plate II.— MarRaropus anruilatus: 1, Front foot, showing single spur; la, Supposed 

 sense organs; 2, Hind foot, showing double spur; 3, Head of female; 4, 4a, 4b, 4e, Fcrnale 

 ticks, natural size, shown at different stages of feeding; 5, Egg; G, Larval or "seed" tick; 

 7, Dorsal surface of the mouth parts of female — a, mandible; b, labrum; c, palpus; d, 

 mouth ring; e, spots covered with papilla; S, Labium and mandibles; 8a, Papilla; enlarged; 

 9, Mandible-X-Busk's organ, use unknown; 10, Mouth parts of young tick. (After Osborn, 

 from Curtice; Bull. No. 5, Bureau of Entomology, U. S. Dept. of Agr.). 



