86 INDEX. 
Page. 
Tick, cattle, nymphal Btage 28-29 
oviposition period 14-15 
process ] 0-17 
periods in life history upon which means of control are based... 38 
pract ical application of data 37-39 
preoviposition period 14 
1 >i ' \ ioue work on life history 10 
reattachmenl to host 29-30 
seed ticks as affected by submergence in water 24-25, 39 
longevity 25-26 
i ick stage 23-30 
nonparasitic period 23-26 
parasitic period 27-30 
submergence as affecting eggs 22, 39 
engorged adults 32-33,39 
sunlight as affecting adults 32 
temperature as affecting engorged females 31-32 
incubation 19-21 
seed ticks 24-25 
i ransmitter of Texas fever 10. 11-12 
Cayenne. (See Amblyomma cajennense.) 
dog, American. (See Dermacentor variabilis.) 
brown. (See Rhipicephalus sp.) 
elk. (See Dermacentor albipictns.) 
fever, human, bibliographic reference 72 
transmission by Ornithodoros moubata 45 
North American. (See Margaropus annulatus and Tick, cattle. I 
fowl. (See also Argas miniatus.) 
bibliographic reference 70 
Gulf coast. (See Amblyomma maculatum.) 
horse, tropical. (See Dermacentor nitens.) 
land turtle. (See Amblyomma tuberculatum.) 
lone star. (See Amblyomma americanum.) 
net. (See Dermacentor occidentalis.) 
paralysis. (See Ixodes pilosus.) 
rabbit. (See Hsemaphysalis leporis-palustiis.) 
sculptured. (See Ixodes sculptus.) 
spinose ear. (See Ornithodoros megnini.) 
turicata. (See Ornithodoros turicata. I 
wood. (See Dermacentor variabilis.) 
Ticks, bibliography 65-75 
castor bean. I See Ixodes.) 
classification and distribution, bibliography 73 75 
habits 40-64 
foreign, that transmil disease, bibliography 69-72 
graphic table for separat ion of families and genera, from Lahille 1 1 
habits 40 64 
host relations 12 
key to families, subfamilies, and North American genera 40-4 1 
life history, general statement 12-13 
transmitters of disease 40, 65-72 
work by Lahille 10 
"yearling," name given to ticks in nymphal stage 13 
