Di'itish F(;rwi o/ Apodomus. 129 



Apodenias hebridensis maclean ^, subsp. n. 



Ajwdemus si/lvnticus sylvaticus, Barrett-namiltou & Ilintoii, P. Z. S. 

 1913, p. 836. 



Hah. Mull, Timor Ilehrides. 



Material examined. Five a.lult malos, collected by Mr. 

 11. W. Sheppard between 13th and 22nd June, 11)12 : — 



Tail, Hind foot, 

 Head witUout \vitliout 

 & bod\'. 



Average 97 



.Maxinuim 100 



Type 100 



Description. This mouse is distinguished from the Great 

 Cumbrae raee externally by its larger size, bigger feet, 

 shorter tail, and ears ; in these respects it makes a nearer 

 approach to h. hebridensis. The colour is darker than in 

 A. h. ciunbra, the back being clouded l)y the relatively 

 numerous and long black hairs ; the flanks are lighter, 

 becoming more pallid below; the line of demarcation is 

 somewhat irregular, and not at all sharply defined ; ventral 

 surface nearly clear silver, with at the most a feeble trace of 

 the pectoral spot. 



The skull differs from that of h. hebridensis in its slightly 

 smaller size ; relatively much narrower zygomatic arches ; 

 slightly narrower intcrorbital region and brain-case, the 

 latter being more depressed ; thepostmolar length is slightly 

 greater (about as in Stornoway), the bullae distinctly 

 smaller, though larger than in the form from Arran ; the 

 nasals are rather long and wide, nearly as in Stornoway ; 

 and the incisive foramiua are long and narrow. From the 

 skull of the Cumbrae form it is distinguished by its greater 

 size, general narrowness, and relatively smaller bulla?. 



With this mouse may be placed for the present the wood- 

 mice of Jura and Islay ; the latter, however, differ from the 

 ;Mu11 form and from each other in such a way as to suggest 

 that with further material we shall be obliged to regard each 

 as I)elonging to a distinct subspecies. 



• In allusion to the local clan. 

 Ann. dC- Mag. N. Hist. Ser. 8. Vol. xiv. *J 



