10 
PLATE VIII. 
ix. 
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SIE 
LIFE HISTORY OF NORTH AMERICAN TICKS. 
The North American cattle tick, Margaropus annulatus: Fig. 1.— 
‘“Deposited-out” female with eggs. Fig. 2.—Unengorged larva. 
Page. 
Fig. 3—Engorged nymph, dorsal view. Fig. 4——Engorged 
nymph, ventral view. Fig. 5.—Unengorged nymph (balsam 
mount). Fig. 6.—Fully engorged female, dorsal view. Fig. 
7.—Male, ventral view. Fig. 8.—Male, dorsal view. Fig. 9.— 
Unengorged female, dorsalview. Fig. 10.—Unengorged female, 
ventral view. Fig.11.—Fully engorged female, ventral view.. 
The gopher-tortoise tick, Amblyomma tuberculatum: Fig. 1.—Un- 
engorged larva. Fig. 2.—Unengorged nymph. Fig. 3.—En- 
gorged nymph. Fig. 4.—Engorged female, dorsal view. Fig. 
5.—Females engorging on tortoise’s feet. Fig. 6.—Male, dorsal 
view. Fig. 7—Unengorged female, dorsal view. Fig. 8.—En- 
gorged female, ventral view 
ry 
. The iguana tick, Amblyomma dissimile: Fig. 1.—Unengorged 
larva. Fig.2.—Unengorgednymph (balsam mount). Fig.3.— 
Male, dorsal view. Fig. 4.—Unengorged female, dorsal view. 
Fig. 5.—Fully engorged female (alive). The Gulf Coast tick, 
Amblyomma maculatum: Fig. 6.—Unengorged larva. Fig. 7.— 
Unengorged nymph (balsam mount). Fig. 8.—Male, dorsal 
view. Fig. 9—Unengorged female, dorsal view. Fig. 10.— 
Eneorged: female, idorsallvaew. 2eooas ance ee. sec eee ee 
The lone star tick, Amblyommaamericanum: Fig. 1.—Unengorged 
larva. Fig. 2.—Unengorged female, dorsal view. Fig. 3.— 
Male (balsam mount). Fig. 4-—Unengorged nymph (balsam 
mount). Fig.5.—Male, dorsalview. Fig.6.—Engorged female, 
frontal view. Fig. 7.—Male, ventral view. Fig. 8.—Un- 
engorged female, dorsal view. Fig. 9.—Unengorged female, 
ventral view. Fig. 10.—Fully engorged female, dorsal view. . 
The Cayenne tick, Amblyomma cajennense: Fig. 1.—Unengorged 
larva. Fig. 2—Unengorged female, dorsal view. Fig. 3.— 
Male, dorsal view. Fig. 4.—Unengorged nymph (balsam 
mount). Fig. 5.—Male, ventral view. Fig. 6.—Unengorged 
female, ventral view. Fig. 7.—Engorged female, dorsal view. 
The Pacific Coast tick, Dermacentor occidentalis: Fig. 8.—Male, 
dorsal view. Fig.9.—Male, ventralview. Fig. 10.—Unengorged 
female, dorsal view. Fig. 11.—Unengorged female, ventral 
view. Fig. 12.—Fully engorged female, dorsal view...... Ct: 
The rabbit Dermacentor, Dermacentor parumapertus margin- 
atus: Fig. 1.—Unengorged larva. Fig. 2.—Unengorged nymph 
(balsam mount). Fig. 3.—‘‘Deposited-out” female, dorsal 
view. Fig.4.—Male, dorsalview. Fig.5.—Unengorged female, 
dorsal view. The tropical horse tick, Dermacentor nitens: 
Fig. 6.—Unengorged larva. Fig. 7—Unengorged nymph (bal- 
sam 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) .....-... Gemetee 
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