new European Voles. 195 



condylo-basal length 25-6 ; zygomatic breadth 14 (14) ; 

 interorbital constriction 4*0 (4*0) ; occipital breadth ll'G; occi- 

 pital depth (median) 7*0 ; nasal 7-0 (7-0) ; diastema 7-2 (7-0) ; 

 mandible 15-4 (15-2); maxillary tooth-row 6*2 (6-2); 

 mandibular tooth-row 6-0 (G'O). 



Specimens examined. — Two, both from the type locality. 



liemarks. — In general appearance the Jersey red-backed 

 vole resembles the richly coloured Evotomys hercynicus 

 ruhidus of the adjacent French mainland (two specimens 

 examined from Dinan, Cotes-du-Nord, collected by Capt. 

 Barrett-Hamilton), though the large size of its skull and the 

 peculiarities of the third upper molar at once show its 

 relationship with E. skomerensis. In the Skomer vole, how- 

 ever, the general colour above is much lighter, approaching 

 the orange-rufous of Kidgway, though less red, and the 

 underparts are a conspicuously contrasted whitish grey with 

 only a faint buffy tinge. "^I'lie feet are also whitish, much 

 paler than in the Jersey animal, both above and on hind part 

 of sole. 



Arvicola sapidus, sp. n. 



Type. — Adult female (skin and skull). Collected at Santo 

 Domingo de Silos, Province of Burgos, Spain, October 7, 

 1906, by G. S. iMiller. Original number 7216. 



Characters. — Size large, as in the British Arvicola ampJii- 

 hius (hind foot 33 to 37 mm. ; condylo-basal length of skull 

 in adults 42 to 44-4 mm.), but skull with nasals very broad, 

 the greatest breadth of both together nearly equal to anterior 

 rostral breadth, and colour, as in the small \\ii\\c\nA,musignaniy 

 conspicuously buffy (upperparts between ochraceous-butf and 

 clay-colour often tinged with russet, strongly "■ lined " with 

 black along middle of back, nearly clear on sides ; underparts 

 light ochraceous-buff clouded by tlie grey (Ridgway no. 6) 

 under colour; feet drab-grey ; tail brownish, lighter below 

 than above). 



Measurements. — Type. Head and body 187 mm. ; tail 123; 

 hind foot 34 ; ear from meatus 18. Skull : condylo-basal 

 length 42 (44-4) * ; zygomatic breadth 23'4 (25) ; inter- 

 orbital constriction 4'4 (4*4) ; occipital breadth 17 (18"6) ; 

 occipital depth (median) 11 (13) ; nasal ll'G (13); diastema 

 13-4 (14-8); mandible 28 (29-4) ; maxillary tooth-row lO'G 

 (10-8); mandibular tooth-row 10-8 (11). 



* Meaeuronicntsin parentheses are those of the largest skull examined 

 ( c^ , Barraciis, rroviuce of CHstellon, Sj aiii, .March 10, 1907, Norberto 

 Gonzalez, Oritfinal number 134). 



13* 



