()a ])i{tltih Funns 0/ Apodeinu.s. 1 17 



vein 2 to inner inarjiin, a small s})ot at middle of inner 

 niar};in and postmedial patch from vein 4 to inner margin 

 Mitli small spot beyond its upper extremity; a white streak 

 striated with red-brown at middle of costa, small postmedial 

 spot on costa, and oblique rather maculate band from costa 

 l)efore apex to termen at vein 4, with a small spot beyond it 

 l)elow apex. Hind wing grey striated with brown; a white 

 antemcdial patch in and below the cell with some blackish 

 striie on it, a small black mark with reddish-yellow centre 

 below middle of cell, and a small black spot with reddish- 

 >ell()w point on its lower extremity at lower angle ; a whitish 

 postmedial patch striated with red-brown on costa and an 

 (Uiptical patch between veins 4 and 1 ; the costal area 

 towards apex striated with red-brown ; cilia dark red-brown 

 with some white at tips. Underside of both wings with the 

 grey areas suffused with red-brown. 



Hub. Pkru, Yahuarmayo, 1 ? type. Exp. 32 mm. 



XVIII. — Xotes on British Forms o/Apodemus. 

 By ^Iartin a. C. II in rox. 



This paper contains an account of the results of a study of 

 tlie long tailed field-mice collected in the Hebrides for 

 jMr. Ogilvie-Grant by Mr. W. K. Sheppard in 1912, and by 

 Mr. D. Anderson, Mr. P. D. Montague, and Mr. C. H. B. 

 Grant in 1913. Several of the Hebndean forms have to 

 be recognized as new subspecies of A. sylvaticus and A. hebri- 

 deuais. In addition, a new subspecies of A. fridariensis, 

 based upon material collected by Mr. Ogilvie-Grant in the 

 Sheilands, is described. 



In his great paper on Mus sylvaticus the late !Major 

 Barrett-Hamilton remarks * that the possible range of the 

 variations of this animal, ''whether individual or geogra- 

 phical, would seem to be narrow. Within this narrow 

 range, however, variation is very evident and perplexing. 

 The animal, indeed, while apj)arently having small power of 

 varying, uses to the utmost the power which it possesses.^' 

 In working out the first collection from the Hebrides he and 

 I were struck with the differences which exist between some 

 of the insular races then examined, but lacking specimens 

 from certain islands, since visited, and without a far more 

 detailed investigation of the cranial characters than was then 



* P. Z. 8. 1900, p. .393. 



