58 
Adaptation of Ticks 
I. Species of Ixodes of which both </ $ are 7’ecorded as 
occim'mg upon the host. 
{a) Species in 7vhich the sexes occur m copula upon the host. 
Number of Geographical 
Host’s times found distribution 
Species 
habits 
Host 
thereon of tick 
I. ricinus ... 
+ 
Bos taurus 
13 ^ 
Europe, N. Africa, 
+ 
Ovis aries 
13 
W. Asia, W. Ame¬ 
Canis familiaris ... 
13 
rica. 
+ 
Cervus elaphus ... 
5 
+ 
,, capreolus 
4 
+ 
,, dama 
1 
■h 
Capra hireus 
2 
o3 
+ 
Equus caballus ... 
6 
Homo sapiens 
2 
Felis concolor 
1 
+ 
Genetta sp. 
1 
+ 
Lepus europaeus... 
2J 
0 
Erinaceus europaeus 
2"i 
0 
Mustela putorius 
1 
0 
,, erminea... 
1 
0 
Meles taxus 
1 
0 
Mus decumanus ... 
1 
HO 
0 
“Mouse” 
1 
0 
Myoxus sp. 
1 
0 
Talpa europaea ... 
1 
0 
Ground squirrel ... 
Larvae and nymphs 
on 
Lizards (10) and birds (5) 
of different species. 
I. ricinus var. scapu- 
+ 
Cattle ... 
N. America, Costa 
laris { S ¥ known) 
+ 
Deer 
Eica. 
± 
Dog 
Man 
I. ricinus var. ovatus 
+ 
Horse ... 
• •• 
Japan. 
(only 2 ¥ known) 
± 
Dog 
I. ricinus var. califor- 
+ 
Black-tail deer ... 
..4 
N. America. 
nicus 
0 
Grey fox 
I. pilosus ... 
+ 
Capra hireus 
3 
S. Africa. 
+ 
Bos taurus 
2 
+ 
Equus caballus ... 
3 
+ 
Sus scrofa domestica 
2 
+ 
Ovis aries 
1 
+ 
Duikerbok 
1 
+ 
Tragelaphus sylvaticus 
1 
± 
Canis familiaris ... 
1 
