I 



EVOTOMYS 237 



teeth normal; m^ with fourth inner salient angle obsolete, or 

 represented only in young stages of wear. 



For external and cranial measurements, see tables at end of 

 volume. 



Remarks. — Probably most nearly related to E. poiUicics and the 

 nageri group. 



C. — rutilus group. 



13. Evotomys baikalensis Ognev. 



1924. Evolornys baikalensis Ognev, Bull. Soc. Nat. Moscow, N.S., 31, 

 p. 73. 



Tij2)e. — Zoological Museum of Moscow University, No. 3938; 

 female, collected July 19, 1917. 



TyiK locality. — BoJibiuOH YmKaHMH, east of Lake Baikal. 



Ra>hge. — Known only from type locality. 



Characters. — Size medium (hind-foot 17-18 mm. ; greatest 

 length of skull 25-7 mm.). Mantle bright rusty-reddish brown, 

 comparatively narrow, the " slight greyish-yellowish-buff " of 

 the flanks extending far upwards. Ventral surface silvery 

 white. 



Tooth-rows relatively very short; the short, rounded salient 

 angles of the molars are se2:)arated from one another by wide 

 spaces ; m^ with three outer and four inner salient angles. 



For external and cranial measurements, see tables at end of 

 volume. 



Remarks. — Apparently, judging from Ognev's figures, a species 

 with an unusually long and slender rostrum, very long diastema, 

 and small cheek-teeth. Probably closely related to E. rutilus. 



14. Evotomys laticeps Ognev. 

 1924. Evotomys laticeps Ognev, Bull Soc. Nat. Moscow, N.S., 31, p. 75. 



Ttjpe. — Zool. Museum University of Moscow, No. 3911; 

 female, collected July 6, 1912. 



Type locality. — XaMap-iHa6aH, province of Irkutsk. 



Range. — Known only from the type locality. 



Characters .—Size medium (hind-foot 17-7 mm. ; greatest 

 length of skull 24:"8 mm.). Mantle bright rusty-reddish brown, 

 wide ; flanks yellowish-buffy-grey with a slight rusty admixture, 

 not sharply distinguished from the rufous mantle. 



Skull rather large with broad rostrum and interorbital region ; 

 tooth-rows "' exceedingly widely disposed." Cheek-teeth with 

 roundish enamel angles ; m^ with three outer and four inner salient 

 angles. 



For external and cranial measur orients, see tables at end of 

 volume. 



Remarks. — Probably related to E. rutilus. 



