MICROTUS 717 



narrowness of the loop, but more especially to the form of the 

 postero-external salient angle, which is usually narrow and 

 sharjjly pointed, and rarely, if ever, except in immature 

 individuals, obsolete. 



Measurements. — External measurements of adult male from 

 Chamonix, Haute-Savoie, France : head and body, 139 ; tail, 71 ; 

 hind foot, 20. Two adult males from the Furka Pass, 

 Switzerland: head and body, 127 and 133; tail, 63 and 68; 

 hind foot, 19 "6 and 19. Two adult females from the same 

 locality: head and body, 126 and 131; tail, 72 and 69; hind 

 foot, 20 and 20 ; ear, 15. Adult male from Santis, Appenzell, 

 Switzerland: head and body, 126; tail, 70; hind foot, 20; 

 ear, 15. Adult male from Valasco, Valle del Gesso, Cuneo, 

 Italy: head and body, 132; tail, 74; hind foot, 21; ear, 17. 

 Adult female from Monte Cimone, Modena, Italy : head and 

 body, 120; tail, 63; hind foot, 20. For cranial measurements 

 see Table, p. 720. 



Specimens examined. — Sixty-two, from the following localities : — 



Feance: Chamonix, Hautc-Savoie, 2 (U.S.N.M.). 



Switzerland : Sangloz, Vaud, 2 (U.S.N.M.) ; Eusannaz, Vaud, 2 

 (U.S.N.M.) ; Zermatt, Valais, 3 (U.S.N.M.) ; Miirren, Berne, 2 ; Meiringen 

 Berne, 2 ; Purka Pass, Uri, 11 (B.M. and U.S.N.M.) ; St. Gothard, Uri, 4 

 Andermatt, Uri, 5 (U.S.N.M.) ; Goschenen, Uri, 6 (U.S.N.M. and Mottaz) 

 Santis, Appenzell, 12 (U.S.N.M.); Meglis Alp, Appenzell, 2 (U.S.N.M.). 

 Hochmiittli, Murgsee region, St. Galleu, 2 (U.S.N.M.) ; Campfer, Grisons, 1 

 (Rothschild) ; no exact locality, 2. 



Germany : Oberstdorf, near Sonthofen, Allgau, Bavaria, 2. 



Italy : Valasco, VaUe del Gesso, Cuneo, 1 (Genoa) ; Monte Cimone, 

 Modena, 1. 



2. Miirren, Berne, Switzerland. W. Gurtner (c & p). 92. 10. 5. 10-11. 



2. Meiringen, Berne. Tomes Collection. 7. 1. 1. 143-144. 



7 6, 9. Furka Pass, Uri. {E. H. O. Thomas (p). 2. 8. 4. 4:3-47. 



ZolUkofer.) 4. 4. 5. 54-5G. 



1. St. Gothard, Uri. Baron E. de Sulys- 45. 7. 5. 3. 



Longchamps (p). 



2. St. Gothard, Uri. Purchased (Brandt). 45. 11. 1. 6-7. 

 1. St. Gothard, Uri. Stockholm Museum 46. 6. 2. 67. 



(E). 



6. Switzerland. (Moscldcr.) E. R. Alston (p). 79. 9. 25. 50. 



1. Switzerland. Purchased (Parreys). 46.6.15.58. 



? al. Monte Cimone, Modena, Modena Museum (p). 3. 2. 22. 1. 

 Italy. {Dr. Major.) 



MiCROTUS NIVALIS AQUITANIUS Miller. 



1908. Micwlus nivalis aquitanius Miller, Ann. and Mag. Nat. Hist., 

 8th sor., I, p. 99, January, 1908. Type in British Museum. 



1910. Microtus [Chionomys) nivalis aquitanius Trouessart, Faunc Mamm. 

 d'Europe, p. 184. 



Type locality. — Near I'Hospitalet, Ariege, France. Altitude 

 about 4800 feet. 



Geographical distribution. — Pyrenees ; at present known from 

 the French side only. 



