a» - 
THE FIELD MOUSE 515 
412), from Asia Minor, a small form in which the total length of the 
skull is no more than 23 mm.; A. s. wztherbyz, Thomas (Aun. and Mag. 
Nat. Hist., December 1902, 490), described from the mountains (5200 feet) 
near Sheoul, Fars, southern Persia, a desert race with pale grey upper 
side, pure white belly, and small teeth; A. s. avzanus, Blanford (Journ. 
ctt., 1881, 162), similar to the last in appearance, but with larger teeth ; 
this mouse was described from Kohrud, between Ispahan and Teheran, 
Northern Persia, where it was found at a height of 7000 feet ; Thomas 
(Aun. and Mag. Nat. Hist., March 1909, 262) records it from the hills 
round Samarkand, Turkestan; A. s. ¢scherga, Kastchenko, is a small 
sub-species with a relatively short tail, inhabiting the Altai Mountains, 
Central Asia; A. s. pentax, Wroughton (/ourn. Bombay N.H. Soc., 
April 1908, 283), from the northern Punjab, is characterised by its 
short tail and narrow skull ; lastly, A. s. wardz, Wroughton (of. cz¢., 282), 
which occurs at a great elevation (9000-11,500 feet) in the mountains 
of Kashmir, a drab-coloured form, is worthy of mention. The North 
African forms are referred to two sub-species, A. s. hayz (Waterhouse) 
from Tangier, Morocco, and A. s. alg¢rus, Pomel. 
DIMENSIONS IN MILLIMETRES :— 


Tail 5 
Head and without Hind foot Har Weight in 
bod, erminal (without Greatest sTamM mes, 
y- hairs) claws). length). | & st 

SPECIMENS FROM REIGATE, SURREY, CAUGHT AND MEASURED BY L. E. ADAMS. 
SEXUALLY IMMATURE OF BOTH SEXES :— 




1. 5th Sept. 1912, average of 6, 1 to 2 days 
old; quite naked and blind, ears under 
skin, umbilical scar. 82 11 6 ae 17 
2. 28th April 1912, caught in the open; 
first pelage, eyes open . 53 43 18 a 4 
8. 15th Sept. 1912, average of 5; ‘eyes open, 
suckling in nest . 56 44 17 7 a 
4. 26th Oct. 1912, male; first pelage. S 60 55 20 13 7 
5, 24th Sept. 1900, female; first pelage . 61 67 20 fe 
6. 28th Sept. 1913, male ; juvenal pelege 
below . 65 67 19°5 12 7:5 
7. 6th Noy. 1911, female; first pelage < 68 71 21 13 8°5 
8. 14th Oct. 1913, female; juvenal pelage 
below . 6 ‘ . 72 70 21 15 12 
9. 7th June 1912, female ; ‘changing from 
grey to white below . 73 67 21 14 11 
10. 11th Aug. 1909, male; full pelage, but 
genitalia immature 73 76 20 
ll. 6th May 1913, female; perforate, but 
juvenal pelage = 74 73 22 16°5 14°5 
12. 22nd Oct. 1913, male; “testis 3 mm. 
adult pelage . 75 68 20 14 12 
13. 17th Sept. 1913, male; ‘testis 11 mm. 3 
juvenal pelage below, adultabove . 78 76 22 13 12 
14. 2lst May 1913, male} juvenal pelage 
above, adult white below . 82 80 28 17 17 
15. 22nd Oct. 1913, female; adult pelage, 
but imperforate : 82 17 21 15 15 
16. 25th Feb. 1913, female; imperforate, 
first pelage 83 90 22 15 17 
17. 19th Feb. 1913, female} imperforate, 
first pelage . 86 83 22 15 16 



