6 LIFE HISTORY OF NORTH AMERICAN TICKS. 
Development of the Ixodidee—Continued. Page. 
Genus Ixodes—Continued. 
The rotund tick, Jvodes king: Bishopps.c2e-: 3:20, o2s --oe eee 82 
Descriptive: ic cs. ons. <5: 2 eee be. lane eer 82 
Host relationship... ..<.4¢-4: 3 eee ese. ae ees eee 82 
Geographical distribittion.. </<.2-.65--6 seat oases see eee ee 83 
 Mtie Bastory ous 5 (1c: aes om, win.c Steele ei aie are eee cee 83 
Life Cycles c65 6c<5cy0s ea ook bce ae eee eee ae eee eee 88 
Economic importance. .3:.5....0.. scene ieee eee 88 
Natural control. 2. 2)....<..45<~5-0- Seece ere ee eee en ee See 88 
Genus Heemaphyealis:........-.0-. 2. -./.5- ak Seen eee Ree 89 
The rabbit tick, Haemaphysalis leporis-palustris Packard.............. 89 
DGSGriptivVe: n=. .esc025e2se-e5+-2$e5 2) teees es See ee 89 
Host relationship: 2...<-s.0¢-<es.2% he pee eae rey Sener 90 
Geographical distribution. ......2.52.t. 2 oo Seaaeeeeeree ye oe tee 90 
Weife MMStOPY = 26.)-(2< A2'n es a Soe eSe 5 teak Se ees 90 
TUMOR VCIO@ cae cac octet ope euniseae ae cin yee nae Cel ee eee 95 
Meqnomic importanice:.:.. 024.2. = .4. dente n2s boo eee ee 96 
Naturalconmirol: tsccc. lee ee a ee desrctct sisi —raletaket Saas 96 
The bird tick, Hemaphysalis chordeilis Packard...........--....----- 97 
DOSCripiiVer sn aa2 cht ccs ea ete oe he besiege i eee 97 
Hest relationship .\5..<222.22.ss2--—- - 102 © s- < Sh eae ae ee eee eee 97 
Geographical distribtition 3/5. .22) 1: se) 22 ee eee ee ees 98 
ile history os. Skee ee a ee eee Se ae Lee en eee 98 
Tiife eyelets site feces a! A A ere ere ABE bs 101 
Biconomiic importance... .2 222.) ee 101 
Natural’ control... 2:2 22252-5220. SS eee ee 102 
Artifieial control. os.- os) ok de ce os eee 102 
Genus Rbipicephalus: <2... 222 s.gese cools «eee s Se ae Sere 102 
The brown dog tick, Rhipicephalus sanguineus (Latreille) (texanus 
Bakes sob ga ccelpcuae tha ie hae ed mere ao al ae 102 
Descriptive: ... 2.20.23 saek S26 ghee ee eee ee 103 
Host relationship -. «2.4 0. .s22 22 Jz -o a s eaee Seeeeee 103 
Geographical distribution... -..2..-.--.-<- GjeteGe see eeeeee eee 104 
Late history. 2304 Sac 2c Seb eee See scotia eee ee 105 
S Lifeeyeleso22 2.325 20.62. Leni acinbics odes See ee a 110 
Mconomie thaporigee 4025555 bs, as pi ee ee PRIM SAE OS 5. 110 
Natural control... .222t82.262220¢ 2000) .ne eee eee eee 110 
Artifieial control: So. ). ciated sed te ase eee eae 111 
Genus Marreropiis..-.: < FFs... 2222 seo ot ene os Chek eee ae eee 111 
The North American cattle tick, Margaropus annulatus (Say). -....-.-- 111 
Descriptive: ...3...0252 052.05 hot, Sh econ be eee eee 111 
Host relationship: .3.o$0.% 6-0... 22 eines ee eee ee eee 112 
Geosraphical distribution... 22222952522 5a oe en ee ee 112 
Life historyi25.423 35.24 2a FS he eee ee 112 
Life. cyelan.. 55. 525-4 Son peste seen hese en ee ee ee Teoma oe 116 
Economic importance, natural control, and artificial control. ....- 117 
The Australian cattle tick, Margaropus annulatus australis (Fuller)... 117 
Descriptive... .<:. 32 USSR P See, Ok eee ene oe ee 117 
Host relationship «2... ~ 4.22.4 22. epeeaesosee eee eee ee 117 
Geographical distribution. :..<..-.. iicck eee tee eee ees 118 
Life history... - +. ..ch.03 oe Se eee rene ic ae 118 
Life cycle. ...2.<5.5-.).<- dees ae eee Cee, eee 122 
Economic importance ....... wa ain & i ISS ia ee ee ees 122 
Natural contrql.....o......%. 0.2 s+ aac a 122 
Artificial control ........... Me st Soe se eoeabe ne 123 
