G. II. F. Nuttall 
61 
II. Species of luhich the females only have been found upon the 
host, the males being knotvn. 
Number of Geographical 
Host’s times found distribution 
Species liabits Host thereon of tick 
I. hexagonus 
0 
Erinaceus europaeiis 
9" 
Europe, N. Africa, 
0 
Mustela erminea ... 
8 
N. & S. America. 
0 
,, vulgaris... 
7 
0 
,, putorius... 
6 
0 
,, furo 
2 
0 
Lutra vulgaris 
1 
40 
0 
Meles taxus 
1 
0 
Lepus cuniculus ... 
1 
0 
Myopotamus coypu 
1 
0 
Sciurus sp. 
1 
0 
Canis vulpes 
3 ^ 
± 
Canis familiaris ... 
3 
+ 
Ovis aides 
1 
+ 
Sus scrofa 
1 
Homo sapiens 
1 
I. hexagonus var. 
0 
Lutra 
N. America. 
cookei { S ¥ known) 
0 
Mustela vison 
0 
Spermophilus 
0 
Weasel 
0 
Porcupine 
0 
Marmot 
0 
Pocket gopher 
Dog 
+ 
Cat 
+ 
Sheep 
I. canisuga 
Canis familiaris ... 
12 ^ 
Europe, N. Am¬ 
0 
,, vulpes 
2 
erica. 
0 
Cotile riparia (bank-swallow) 
3 
0 
Mustela furo 
1 
-21 
0 
Meles taxus 
1 
0 
Sciurus ... 
1 
0 
Talpa europaea (larva) 
1; 
+ 
Equus caballus ... 
11 
2 
+ 
Ovis aides 
1) 
I. putus. On marine birds only ( e only found in nests or beneath rocks and soil near nests). 
0 
Phalacrocorax verrucosus ... 
Europe, N. & S. 
0 
Pygosceles taeniatus 
America, Asia, 
0 
Spheniscus magellanicus 
Australasia. 
0 
Fratercula arctica 
3 
0 
Penguin sp. 
2 
0 
Uria troile 
1 
0 
Sed-gull sp. 
1 
0 
Sula bassana 
1 
0 
Eulmarus glacialis 
1 
0 
Cormorant sp. 
1 
+ 
Man (occasionally, see text, p. 
62) 
