'04 EODEKTIA ' 



but are immediately distinguishable by the unusually large size 

 of the molars. Posterior loop of m 3 and anterior loop of TOj rather 

 short ; most of the triangles showing an exaggeration of the 



FIQ. 142. 

 Microtus dentatiut. X 5. 



tendency to flattening characteristic of cabrerse ; m 3 with a large, 

 completely closed triangle on outer side. 



Measurements. — External measurements of type : head and 

 body, 125 ; tail, 40 ; hind foot (dry), 22. For cranial measure- 

 ments see Table, p. 707. 



Specimen examined. — The type (Madrid). 



MICROTUS HARTINGI Barrett-Hamilton. 



1903. Microtus (Microtus) hartingi Barrett-Hamilton, Ann. and Mag. Nat. 



Hist., 7th ser., xi, p. 307, March, 1903. Type in British Museum. 

 1910. Microtus hartingi Trouessart, Paune Mamm. d'Europe, p. 174. 



Type locality. — Larissa, Thessaly, Greece. 



Geographical distribution. — Known only from the vicinity of 

 Larissa. 



Diagnosis. — Size large, slightly exceeding that of Microtus 

 orcadensis and M. cabrerse (hind foot about 18, condylobasal 

 length of skull about 29 mm.) ; tail relatively short ; colour more 

 yellowish than in any of the European forms of M. arvalis ; skull 

 with rather deep brain-case and slightly convex dorsal profile ; 

 teeth as in M. arvalis, but triangles narrower relatively to their 

 width, and area of dentine spaces reduced as compared with 

 thickness of enamel. 



Colour. — Back and sides a light dull buff, perhaps nearest the 

 pinkish buff of Ridgway, clear on flanks and thighs, but else- 

 where grizzled by the blackish tips of the longer hairs, these 

 most numerous over posterior half of back ; underparts, feet, and 

 tail buffy white, the dorsal surface of tail slightly more yellow 



