PITYMYS 777 



brain-case is less squarely truncate than in P. nehrodensls or 

 P. subterraneus, so that the condyles are usually visible when 

 skull is viewed from above. Auditory bullte rather small, their 

 surface smoothly rounded. Palate with lateral pits large and 

 sharply defined, noticeably wider than median ridge. 



Teeth.* — Though resembling in a general way those of Pitymys 

 savii the teeth are at once recognizable by the size and position 

 of the anterior outer triangle of m^. This triangle is so reduced 

 in size that it is smaller than the succeeding triangle, and its 

 point does not reach the level of a line joining the outer 

 extremity of the anterior loop with tip of second outer triangle. 

 In position the first outer triangle is opposite the large inner 

 triangle, the two communicating freely by their bases, and 

 together forming a single transverse loop varying somewhat in 

 form according to the completeness of fusing of the two triangles. 

 The second outer triangle never communicates with the loop 

 thus formed, but usually opens into the tei-minal loop as in 

 P. savii. Terminal loop short and broad, without trace of inner 

 re-entrant angle, its main axis directed backward and slightly 

 outward. The length of the third tooth is noticeably less than 

 that of the second, and the shortness of the first outer triangle 

 often causes the crown to assume a peculiar outward-bowed 

 general outline that is highly characteristic of the members of 

 the group. Second upper molar as in P. subterraneus, the third 

 triangle without trace of postero-internal loop. Upper incisors 

 slightly projecting, most of their anterior surface visible when 

 skull is viewed from above, but not sufficiently thrown forward 

 to be a conspicuous feature. Other teeth without special 

 peculiarities. 



Measurements. — Average and extremes of seven adults from 

 Cintra, Portugal: head and body, 93-2 (90-98); tail, 23-4 

 (21-27); hind foot, 15 (14-5-15'7); ear, 8-3 (8-8-6). For 

 cranial measurements see Table, p. 788. 



Specimens examined. — Eighteen, all from Cintra, Portugal. 

 16 7 ?, 2 al. Cintra, Portugal. 0. Thomas (c & i'). 98. 2. 2. 37-52. 



PITYMYS MARI^ Major. 



1905. Microtus {Pitymya) maritv ]\Iajor, Ann. and Mag. Nat. Hist., 7th ser., 

 XV, p. 515, May, 1905. Type in British Museum. 



1908. P[itymy$] mariee Miller, Ann. and Mag. Nat. Hist., 8th ser., i,p. 204, 

 February, 1908. 



1910. Pitymys marin- Trouessart, Faune ]\Iamm. d'Europe, p. 192. 



Tyj)e locality. — Villalba, Lugo, Galicia, Spain. 

 Geograph'eaJ ilintrihiition. — Known at present from the type 

 locality only. 



* Essentially similar to those of P. ibericns, fig. 1G2 (p. 781). 



