ILLUSTRATIONS, 
Prate XIV. The Rocky Mountain spotted-fever tick, Dermacentor venustus: 
Fia. 
Fig. 1—‘‘Deposited-out” female with eggs. Fig. 2.—Unen- 
gorged larva. Fig. 3.—‘‘Deposited-out”’ female, frontal view. 
Fig. 4.—Engorged larva. Fig. 5.—Engorged female, dorsal 
view. Fig. 6.—Unengorged female, dorsal view. Fig. 7.— 
Male, dorsal view. Fig. 8.—Male, ventral view. Fig. 9.— 
Unengorged female, ventral view ........---.-----+--+------ 
XV. The American dog tick, Dermacentor variabilis: Fig. 1.—Unen- 
gorged larva. Fig. 2.—Unengorged nymph (balsam mount). 
Fig. 3.—Engorged nymph about to molt tofemale. Fig. 4.— 
Engorged nymph about to molt to male. Fig. 5.—Male, dorsal 
“view (Texas form). Fig. 6—Unengorged female, dorsal view. 
Fig. 7.—Male, dorsal view (Oregon form). Fig. 8.—Unengorged 
female, ventral view. Fig. 9.—Male, ventral view. Fig. 10.— 
Engorged female, dorsal view. Fig. 11.—Engorged female, 
RE I ee adh ao isia'n a age Sa wwe oid 2 
TEXT FIGURES. 
. The fowl tick, Argas miniatus: Distribution in the United States and 
earns ae es es PO a eas kaa a cia debe es 
. The spinose ear tick, Ornithodoros megnini: Distribution............. 
. The black-legged tick, Ivodes scapularis: Distribution in the United 
SOE RT sar el neo SWE Rit saat aD a od ier a ta eC ie 
. The rotund tick, Jvodes kingi: Distribution in the United States . . 
. The rabbit tick, Hemaphysalis leporis-palustris: Distribution in the 
SE SE Swe ile ded Slo et Se ies 1 Baa oe eS po 
. The brown dog tick, Rhipicephalus sanguineus: Distribution in the 
de a ath a. 5 
. The North American cattle tick, Margaropus annulatus: Distribution 
Ee ER AO eat hancacnccmiceeanaecawe 
. The gopher-tortoise tick, Amblyomma tuberculatum: Distribution... . 
. The gopher-tortoise tick: Vesica biloba...................--.-.-.-- 
. The Gulf Coast tick, Amblyomma maculatum: Distribution in the 
en Se Ee ee at eS Saline Anke Warten 
. The lone star tick, Amblyomma americanum: Distribution in the 
ee ee BE aes a oe cn oe ne xl omnes oa S we wm 
. The Cayenne tick, Amblyomma cajennense: Distribution in North and 
nal A I Otte ub aed cba d monde ad~ ass iceumecmacacccs 
. The rabbit Dermacentor, Dermacentor parumapertus AAO Dis- 
ERE Sy Ey Sp rye = eee ee 
. The Rocky Mountain spotted-fever tick, Dermacentor venustus: Dis- 
Deremrneemn era ieer Nigsatert TATOO... a na ccc Gan cdacenenensmecace dim 
. The Pacific Coast tick, Dermacentor occidentalis: Distribution in the 
Me atte ie ia Cds, Do Us dies ncn oklebictGauseeschsonss 
. The American dog tick, Dermacentor variabilis: Distribution in the 
I eet aN hae bine o kmmbeeenieba 
. The tropical horse tick, Dermacentor nitens: Distribution in North 
ne TET WEE RIMS ee els aenkGuexeuedenuce 
11 
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