722 ROMNTIA 



probably referable to Microtus lebrunii lebrunii, 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 <$. Nimes, Gard, Prance. O. Thomas (p). 8. 8. 10. 101-103. 



(G. Mottaz.) (Topotypes.) 



2. S. Prance. Tomes Collection. 7. 1. 1. 146-147. 



Microtus lebbunii leucueus Gerbe. 



1852. Arvicola leucurus Gerbe, Bevue Zoologique, 2nd ser., iv, p. 260, 



June, 1852. 

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



lands, p. 359 (part). 

 1908. Microtus lebrunii leucurus Miller, Ann. and Mag. Nat. Hist., 8th ser., 



I, p. 102, January, 1908. 

 1910. Microtus (Chionomys) lebruni leucurus Trouessart, Paune Mamm. 



d'Europe, p. 184. 



Type 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 If. lebrunii lebrunii, 

 except that the back is sufficiently suffused with buffy or pale 

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

 characteristic of the typical, lowland race. This suffusion 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 M. lebrunii 

 lebrunii by its large, strongly inflated, normally developed auditory 

 bullse. As in M. nivalis the lower edge of the bulla extends 

 decidedly beyond line of cutting edge of molars. 



Measurements. — 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.). 



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



Prance. (C. Mottaz.) (Topotypes.) 



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



daki). 

 1. S. Prance. Tomes Collection. 7. 1. 1. 145. 



