Vules from the Turn Slian Iltyion. 373 



Mack, with a faint suffusioti of pale ocliraceous buff, particu- 

 larly on sides. The iiitlividual hairs are blackish slate 

 throul!;!! the greater j)art of their leii;;th, tlieu sinokc-groy 

 (hirkeiiiiig to ocliraceous, this succeeded by a blackish tip. 

 Underparts white, the dark bases of the hairs appearing 

 irregularly at surface. Feet wiiite, with a faint creamy 

 tinge. Tail light cream-bufF, with a faint brownish tinge in 

 pencil. 



Skull and teeth. — The skidl resembles that of Alllcola 

 alhicauda^ in all tletails of structure and form. The audital 

 bulla} appear to be less inflated than in the allied species, but 

 this character may be purely individual. Teetli noticeably 

 smaller than in A. alhiaiuda, the length of the upper molar 

 series (alveoli) in five skulls ranging from 5'G to 6 mm., that 

 of the lower row from 5 to o-i mm., while in the type of 

 A. albicauda the same measurements are respectively 6'G and 

 G"4 mm. Aside from their smaller size, the molars differ 

 from those of Aliicola albicauda in several details of structure. 

 In the posterior upper tooth the first outer reentrant angle is 

 deeper and better defined than in A. albicauda, usually 

 almost isolating a small triangle ; terminal loop longer and 

 narrower. In the first lower molar the anterior loop is 

 narrower than in the related species, and the unusual depth 

 of the first inner reentrant angle causes it to be rather 

 noticeably crescentic in outline. 



Measurements (Type). — Head and body 101 mm. ; tail 33 ; 

 hind foot 19'G (18); ear from meatus 15. 



Skull: upper length 26 G ; condylo-basal length 2(5; 

 palatal length 13 -1 ; diastema 8 ; zygomatic breadth 15 ; 

 mterurbital constriction 4"2 ; breadtli of brain-case above 

 roots of zygomata 12; mandible IG'2 ; maxillary tooth-row 

 (alveoli) 5*8; mandibular tooth-row (alveoli) 54. 



Specimens ejcumined. — Seven : five from the type locality, 

 one from the same valley at an elevation of 10,0U0 feet, an 1 

 one from Kapkak, 8000 feet. 



Remarks. — At the recjuest of Mr. Thomas this sj)ecie3 is 

 named after Mr. \A'orthingtou. 



Evotomys centralis, sp. n. 



Tiipe. — Adult male (skin and skull), collected in the Koksu 

 Valley, altitude 9000 feet, September 24, 1901, by A. B. 

 Bayley Worthington. Original number 21 f. 



* See Proc. Acad. Nat. Sci. Philadelphia, 1899, pb. xii. and .\iii. 

 fip. r,. 

 t The specimen is now registered as B.M. o. 12. 4. 11. 



