new European Voles. 20o 



only, this species appears to be well cliaracterized by the 

 convex dorsal ])rofile of the skull and the very shallow third 

 re-entrant angle on inner side of postf^rior upper molar, features 

 which are not closely a|)proxi mated in a considerable series 

 of P. suhterruneus from 13elgium, France, Switzerland, and 

 the Transylvanian Aljjs. 



Piiymys pyrenaicus brunneus, subsp. n. 



7>/;e.— Adult female (skin and skull). B.M. no. 6. 4. 1. 82. 

 Collected in the Forest of Bouconne, Gers, France (altitude 

 250 m.), February 4, 1900, by A. Robert. Presented by 

 0. Thomas, Esq. 



Characters. — Similar to Pitymys pyrenaicus pyrenaicus, 

 but colour much more brownish^ the upperparts a light, dull, 

 faintly grizzled wood-brown, with scarcely a trace of the 

 bister and clear hair-brown tints characteristic of the typical 

 form. 



Measurements. — Type. Head and body 93 mm.; tail 26; 

 hind foot 15; ear from meatus 8. Skull: condylo-basal 

 length 23 ; zygomatic breadth 14 ; interorbital constriction 

 4"0 ; occipital breadth 11; occipital depth (median) 5"6; pala- 

 tal depth Q'2-, nasal 6"0; diastema 7*0 ; mandible 15; maxillary 

 tooth-row 5*8; mandibular tooth-row 5'8. 



Specimens examined. — Seven, all from the type locality. 



Remarks. — This appears to be a well-defined local race of 

 Pitymys pyrenaicus, as the seven skins differ without exception 

 from the eleven Pyrenean specimens with which they have 

 been compared. Its geographical range will probably be 

 found to extend over the low country lying between the 

 Pyrenees and the Gironde. 



Pitymys planiceps, sp. u. 



Type. — Adult (skull only). No. 2190, Lataste collection. 

 Bareges, Hautes-Pyrene^es, France. Altitude about 4000 

 feet. 



Characters. — Size about as m Pitymys pyrenaicus ; teeth 

 as in that species, P. savii, &c. ; skull more flattened than in 

 any other known Euroj)ean member of the genus, the dorsal 

 profile nearly straight from posterior extremity of nasal to 

 back of interparietal, the general outline when viewed from 

 above essentially as in P. pyrenaicus and P. savii. 



Measurements. — Condylo-basal length 23 (23) ; zygomatic 

 breadth 14 (13-8); interorbital constriction 3-8 (38) ; 

 occipital breadth 11-4 (11-4); occipital depth 5*4 (6-0); 

 palatal depth &2 (6-8) ; nasal 6-0 (6'2); diastema 7'0 (7-0^; 



