



MURIDA—ORCADENSIS ~~ 

DIMENSIONS IN MILLIMETRES (continued) :— 
Tail (with- | Hind foot Ear ene 
Head and : n Weight in 
out terminal) (without (greatest 
body. hairs). claws), | length), | S™=™mes. 
















M. 0. rousatensis— 
Four males caught and measured by W. 
R. Ogilvie-Grant, on Rousay, 13th and 
14th June 1912. 
5 5 . ° 5 5 - (Type) 135 36 18 12 ay 
: 2. 5 5 * . zj . 6 . 133 41 19°5 12 ad 
8. . . . G di * é e 127 38°5 18 13 So 
4. C 6 A . = O 4 . 127 40 16°5 i1 ov 
Two caught and measured by W. Cowan, 
25th August 1904, 
: 5. Male. 5 ° A 6 . c 126 45 20 12°5 ae 
6. Female . 5 : 6 5 F c 120 35 18 ll 
M. o. westre— 
1. Male, 5th April 1906, J. Edgar, per 
N. B. Kinnear (type of sub-species) . 108 34 18 10°5 be 
2. Male, G.S. Miller . c - e a 115 42 18 1l ae 
3. Female,G.S. Miller . a : 2 108 38 17 11 a0 
MALEs :-— 
a! M. o. sandayensis— 
Two caught and measured by W. C. Wallace 
) (per N. B. Kinnear). 
1. 8rdJan.1906 . ° . 9 a 102 33 18 105 53 
2, 22nd. 4, ° 5 5 cs . 117 3875 19 11 ais 
= Six caught and measured by W. R. Ogilvie- 
Grant. 
3. S8thJunel912 . 5 O . . 119 38 17 13°5 
4. 28rd vn A a Q B A 131 42 18 13 
5. 24th ” . . - 5 0 125 43 18°5 115 
6. 27th ” * ° 5 5 m 118 39 17°5 11 as 
ie SYR 55 BOD SOR SS Pct os 116 88 175 12 a 
: 8. 27th ,, c 3 : : C 115 40 18 115 ce 
Approximate average ofS males. 0 118 38°8 17-9 118 
FEMALES :— 
M. 0. sandayensis— 
Nine caught and measured by W_C. Wallace 
(per N. B. Kinnear). 
1. 8rdJan.1906 . 0 5 ° . 110 38°5 18 10°5 
ocesrdi eas, yy ee ees 104 85°5 | 18-5 10:5 
8. 8rd, od eh Ma ee 11 42 18 11°5 a3 
4, 8rd “A (immature) 6 ci 95 32 17 10°5 ate 
5; 22nd 5; 5 ° A 5 . 100 85 16°5 10 cary werd 
6. 22nd ,, . ° . . . 100 35 18 10 2 
Ge. 2nd) | 35 . 3 5 . . 111 35 185 11 
8) 22nd) |; c . . . 103 35 18 10 
9. 22nd ,, awe te, ees 96 35 is 10 
Four caught and measured by W. R. 
Ogilvie-Grant, 6 foetuses. 
10, 9thJunel1912 . 5 ae 4c . 120 85 18 13 
ll. 27th 2 5 5 . . . 122 389 18 12°5 
12. 28th =, Bee Sa 118 84 17 12 
13. 28th rh 5 o : f 3 98 33 17 115 
Approximate average of 10 adult females, | ) B. mA Co 
eieting (as immature) Nos. 4,9,and 18 | f 110 cbre ote We 




The mice are also found on sandy ground near the sea-shore, 
as on Sanday. They sometimes enter cultivated fields to 
feed on the crops, and numbers may then be killed when the 
hay is cut in August. 
