PITYMYS 



779 



<le la Reina, Burgos: head and body, 92; tail, 22 - 4; hind 

 foot, 14' 4; ear, 8. For cranial measurements see Table, 

 p. 788. 



Specimens examined. — Four, from the following localities in Spain : 

 Silos, Burgos, 3 (B.M. and Mottaz) ; Castrillo de la Reina, Burgos, 1. 



2 V. Silos, Burgos, Spain. G. S. Miller (c). 8. 8. 4. 294-295. 



(8. 8. 4. 294. Type of species.) 



PITYMYS DEPRESSUS Miller. 



1908. Pitymys depressus Miller, Ann. and Mag. Nat. Hist., 8th ser., i, 



p. 204, February, 1908. Type in British Museum. 

 1910. Pitymys depressus Trouessart, Faune Mamm. d'Europe, p. 193. 



Type locality. — Rascafria, south side of Sierra de Guadarrama, 

 Province of Madrid, Spain. 



Geographical distribution. — Central Spain ; at present known 

 from the region of the Sierra de Guadarrama only. 



Diagnosis. — -A small animal related to Pitymys marise and 

 P. pelandonius, but immediately recognizable by its broadened, 

 much flattened skull, and very small auditory bullae. 



Colour. — The colour is apparently similar to that of Pitymys 

 lusitanicus and P. pelandonius, but the only known specimens 

 have been preserved, in alcohol and may not now be in normal 

 condition. 



Skull. — The skull differs conspicuously from that of the 

 other known members of the ibericus group, all of which, 

 P. marise and P. pelandonius not excepted, are characterized by 

 depth of brain-case, in the much flattened 

 general form, the outline, viewed from 

 the side, not very unlike that of P. savii. 

 Dorsal profile slightly but evidently and 

 very evenly convex, the nasals not so 

 abruptly sloping as usual. Rostrum 

 excessively shallow immediately behind 

 incisors, its least vertical depth barely 

 exceeding greatest combined breadth of 

 nasals. Posterior termination of nasals 

 straight or slightly emarginate, exceeded 

 by nasal branch of premaxillary to extent 

 of nearly 1 mm. Interorbital region 

 about as wide as anterior portion of 

 rostrum, faintly concave laterally, the 

 temporal ridges evident in adults, though 

 very low and always remaining wide 

 apart. Zygomata rather noticeably expanded at middle, pro- 

 jecting conspicuously beyond level of sides of brain-case. Length 

 of brain-case to posterior edge of interparietal less than breadth 

 over roots of zygomata, the general outline sub-circular ; occipital 



<^TL^ 



FIG. 160. 



Pitymys depressus. 



Nat. size. 



