Bul. 106, Bureau of Entomology, U. S. Dept. of Agriculture. PLATE XIII. 
THE RABBIT DERMACENTOR, DERMACENTOR PARUMAPERTUS MARGINATUS, AND 
THE TROPICAL HORSE TICK, DERMACENTOR NITENS. 
Dermacentor parumapertus marginatus: Fig. 1.—Unengorged larva. Fig. 2.—Unengorged 
nymph (balsam mount). Fig. 3.—“Deposited-out”’ female, dorsal view. Fig. 4.—Male, 
dorsal view. Fig. 5.—Unengorged female, dorsal view. Dermacentor nitens: Fig. 6.—Unen- 
gorged larva. Fig. 7W—Unengorged nymph (balsam mount). Fig. 8.—Engorged female, 
dorsal view. Fig. 9.—Male, dorsal view. Fig. 10.—Unengorged female, dorsal view. Fig. 
11.—Engorged nymph, ventral view. Fig. 12.—Engorged nymph, dorsal view. Fig. 13.— 
Engorged female, ventral view. Fig. 14.—Male (balsam mount). (Original.) 
