Puate I. 
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ILLUSTRATIONS. 
PLATES. 
Apparatus and contrivances used in life-history studies of ticks. 
Fig. 1.—Rearing cage. Fig. 2.—Bell jar containing attachment 
cylinder and animal. Fig. 3.—Outdoor attachment and engorge- 
ment box. Fig. 4.—Dropping cage. Fig. 5.—Bull with harness. 
Fig. 6.—Dog with collar... a Be Bg: 4 HL cs ae abe 
Apparatus used in Hie-history. aeuliess ne tikes *F ig. 1.—Thermo- 
eraph and apparatus for weather records. Fig. 2.—Pans with 
glass tubes and pill boxes, in and on moist sand . 5p FOE: 
The fowl tick, Argas miniatus: Fig. 1. 2 Uriesinshood Gos. Fig. 
2.—Unengorged nymph after first molt. Fig. 3.—Unengorged 
nymph after second molt. Fig.4.—Engorged nymph after second 
molt. Fig. 5.—Engorged female, dorsal view. Fig. 6.—Unen- 
gorged male, dorsal view. Fig.7.—Unengorged male, ventral view. 
Fig. 8.—Engorged female, ventral view.....................---- 
The spinose ear tick, Ornithodoros megnini: Fig. 1.—Unengorged 
larva. Fig. 2.—Slightly engorged nymph, dorsal view. Fig. 3.— 
Slightly engorged nymph, ventralview. Fig.4.—Engorged nymph, 
dorsal view. Fig. 5—Engorged nymph, ventral view. Fig. 6.— 
Engorged female, dorsal view. Fig. 7.—Male, dorsal view. Fig. 
8.—Female from which all eggs have been deposited, ventral view. 
Fig. 9.—Male, ventral view 
. The black-legged tick, Ixodes scapularis: Fig. 1.—Unengorged larva. 
Fig. 2.—Male, dorsal view. Fig.3.—Male, ventral view. Fig. 4.— 
Unengorgednymph. Fig. 5.—Partly engorged female, dorsal view. 
Fig. 6.—Partly engorged female, ventral view. Fig. 7.—Fully 
engorged female, dorsal view. Fig. 8.—Fully engorged female, 
ventral view 
. The rotund tick, Ixodes kingi: Fig. 1—Unengorged larva. Fig. 2.— 
Engorged nymph, dorsal view. Fig. 3.—Engorged nymph, ventral 
view. Fig. 4.—Male, dorsal view. Fig. 5.—Male, ventral view. 
Fig. 6.—Unengorged female, dorsal view. Fig. 7—Unengorged 
female, ventral view. Fig. 8.—Partially engorged female, dorsal 
view. Fig. 9.—Partially engorged female, ventral view. The 
brown dog tick, Rhipicephalus sanguineus: Fig. 10.—Unengorged 
larva. Fig.11.—Unengorged larva. Fig.12.—Unengorged nymph. 
Fig. 13.—Unengorged female, dorsal view. Fig. 14. 
view. Fig. 15.—Partially ‘‘deposited-out” female, dorsal view. 
Fig. 16.—Unengorged female, ventral view. Fig. 17.—Male, 
TS Cte at te a oa wk os enna ie machen ewnqumness 
The rabbit tick, Hemaphysalis leporis-palustris: Fig. 1—Unengorged 
larva. Fig. 2.—Unengorged nymph. Fig. 3—Engorged nymph. 
Fig. 4.—Engorged female. Fig. 5.—Partially engorged female 
(balsam mount). Fig. 6.—Male (balsam mount). The bird tick, 
Hexmaphysalis chordeilis: Fig. 7—Male, dorsal view. Fig. 8.— 
Male, ventral view. Fig. 9.—Engorged nymph, dorsal view. 
Fig. 10.—Engorged nymph, ventral view .........-.-...-------+-- 
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