722 



RODENTIA 



probably referable to Microhis lehrunii lehrunii, though in its 

 present faded and dust-stained condition exact identification is 

 impossible. The skull is so imperfect that it serves only to show 

 that the animal was not adult. 



3 6. Nimes, Gard, France. O. Thomas (p). ' 8. 8. 10. 101-103. 



(C. Mottaz.) {Topotyjycs.) 



2. S. France. Tomes Collection. 7. 1. 1. 14G-147. 



MiCROTUS LEBRUNii LEUcuRus Gerbe. 



1852. Arvicola leucurus Gerbe, Eevue Zoologique, 2nd ser., iv, p. 2G0, 



June, 1852. 

 1857. Arvicola nivalis b. Arvicola leucurus Blasius, Saugethiere Deutscb- 



lands, p. 359 (part). 

 1908. Microtus lehrunii leuciirus Miller, Ann. and Mag. Nat. Hist., 8tb ser., 



I, p. 102, January, 1908. 

 1910. Microtus [Chionomys) lebruni leucurus Trouessart, Faune Mamm. 



d'Europe, p. 184. 



Ty2Je locality. — Barcelonnette, Basses-Alpes, France. Altitude 

 about 1300 mm. 



Geographical distribution. — South-western Alps (Departments 

 of Basses-Alpes and Var). 



Diagnosis. — Upper parts pale smoke-grey, slightly but evi- 

 dently washed with wood-brown ; skull with auditory bullae large 

 and well inflated, essentially as in M. nivalis. 



Colour. — The colour resembles that of M. lehrunii lehrunii, 

 except that the back is sufiiciently suffused with bufFy or pale 

 wood-brown to destroy the clear grey, almost hoary appearance 

 characteristic of the typical, lowland race. This sufiusion is 

 usually more noticeable on rump than on sides, so much so that 

 in one specimen (No. 7. 1. 1. 145, probably a paratype) the 

 rump is a clear dull buff. 



Skull. — The skull is distinguishable from that of 31. lehrunii 

 lehrunii by its large, strongly inflated, normally developed auditory 

 bull*. As in M. nivalis the lower edge of the bulla extends 

 decidedly beyond line of cutting edge of molars. 



3Ieasuremcnts. — Adult female from St. Paul, near Barce- 

 lonnette, Basses-Alpes, France: head and body, 120; tail, 68; 

 hind foot, 19 ; ear, 14" 8. For cranial measurements see Table, 

 p. 721. 



Specimens examined. — Twelve, all from the vicinity of Barcelonnette 

 (B.M, and Mottaz) ; also several old specimens without definite locality, 

 probably referable to the same race (B.M. and U.S.N.M.). 



(J, 9. Barcelonnette, Basses-Alpes, O. Thomas (p.) 8. 8. 10. 104-105 



France. (C. Mottaz.) (Topotypes.) 



3. Basses-Alpes. ■ Purchased (Parzu- 52. 5. 27. 47-49. 



daki). 

 1. S. France. Tomes Collection. 7. 1. 1. 145. 



