238 MICROTIN^ 



15. Evotomys parvidens Ognev. 

 1924. Evotomys farvidens Ognev, Bull. Soc. Nat. Moscow, N.S., 31, 

 p. 77. 



Typc.—ZooX. Museum University of Moscow, No. 3907; 

 female, collected July 2, 1912. 



Tyjje locality. — XaMap-fla6aH, province of Irkutsk. 



Range. — Known only from the type locality. 



Characters. — Size medium (hind-foot 16-2 mm. ; greatest 

 length of skull 24-7 mm.). Mantle bright red-rusty brown, 

 covering a large part of the back; flanks rusty-buffish with a 

 visible reddish tinge. 



Skull large, much elongated in the rostral region, smooth 

 in the frontal region; coronal suture pressed far backwards. 

 Though the tooth-rows arc much shortened, the enamel loops are 

 much extended laterally; the salient angles of the teeth are 

 long and roundish; m^ with three outer and four inner salient 

 angles. 



For external and cranial measurements, see tables at end of 

 volume. 



Remarks. — Probably identical with E. laticeps. 



16. Evotomys otus Turov. 

 1924. Evotomr/s otus Turov, Comptes Rendus de I'Acad. Sci. Russie, 

 1924, p. liO. 



Type. — Zool. Mus. Russ. Acad. Sci. (Leningrad) ; in alcohol. 



Type locality. — N.E. shore of Lake Baikal. 



Characters.- — The following diagnosis has been kindly 

 furnished by Dr. Turov. — " Statura corporis baud magna; caput 

 relative majus; auribus immensibus (16-9 mm.), capillis pareis 

 obtectis; pars nasalis cranii solida; spatium interorbitale 

 latium (4'5 mm.) ; ossa nasalia elongata (7-5 mm.) ; dentes minimi; 

 series molarium (4-6 mm.)." 



Remarks. — Doubtfully distinct from E. rutilus. 



17. Evotomys rutilus Pallas. 

 (Synonymy under subspecies.) 



Range. — Arctic Europe and Asia; southwards in Scandinavia 

 to Tromso, Norway, and Norbotten, Sweden; in Asia to the 

 Altai, Syansk Mountains, Kinghan Mountains, and Ajan on 

 the shore of the Sea of Okhotsk. Details of distribution in eastern 

 Europe and Asia not well known. 



Characters.- — Size medium (hind-foot about 18 mm. ; condylo- 

 basal length of skull 25 mm.), tail short, less than half the length 

 of the head and body, densely haired, with a long terminal pencil, 

 its upper surface more or less concolorous with back. 



