262 MICROTIN^ 



series referred to " bedfoidire " and " smithii," and no other 

 character can be found to give it the slightest support. 



On laying out all the skulls from Japan, whether labelled as 

 " smithii," " bedfordim," " andersoni " or " iiiigatcB," in order of 

 age, we find that the whole series forms an exact parallel to the 

 series formed by the skulls of E. r. rufocanus, E. r. shanseius, and 

 E. r. regulus when similarly arranged. How completely the four 

 series agree, when taken stage by stage, can be appreciated from 

 the comparative table on p. 261. 



P.S. — To the synon_ymy of E. r. rnfocamts should be added : — ■ 

 1881. Arvicola riifocanus var. sibirica Poljakov, Mem. Imp. Acad. 

 Sci. St. Petersburg, 39, Appendix, p. 56. I have not been able to find 

 descriptions of E. ussuriensis and E. kolymensis described by Ognev 

 from N.E. Asia. From Montagu's note on the type of E. kolymensis, 

 it would seem that this is a synonym of E. riifocanus. 



E. — American forms. 



23. Evotomys caunnus Bailey. 



1898. Evotomys cauriniis Bailey, Proc. Biol. 8oc. Washington, 12, 

 p. 21 ; Miller, " List," 1912,'p. 209 ; " List," 1924, p. 401. 



Type.— U.S. Nat. Mus., No. 89460 (Biol. Survey Coll.); 

 adult male, collected July 18, 1897, by E. A. Preble. 



Type locality. — ^Lund, east shore of Malaspina Inlet, British 

 Columbia. 



Range. — The coastal region of British Columbia east of the 

 Strait of Georgia and south to the Frazer River. 



Characters. — Size small (hind-foot 18 mm. ; basal length of 

 skull 21 mm.) ; tail very short. 



Colour dark. In summer mantle well defined, dark, rich, 

 chestnut, darkened with black-tijjped hairs ; sides sepia grey 

 tinged with pale buff; spots over side glands of males whitish 

 or dusky; face clear dark grey; belly washed with whitish or 

 rarely buffy. Ears dusky, scantily haired. Tail bicoloured, 

 chestnut or dusky above with blackish tip, buffy below. Feet 

 soiled whitish or slightly dusky. In winter mantle brighter, 

 more rufescent than in summer; sides clearer grey. Young 

 darker than adults, with belly, feet and tail dusky. 



Skull short and wide, with spreading zygomata and very 

 narrow nasals and rostrum. Auditory bullae small and flattened 

 as compared with those of E. occidentalis or E. saturatus ; about as 

 large as those of E. ivrangeli but wider and flatter. Incisors small 

 and slender. Cheek-teeth small and crowded longitudinally; 

 anterior loop of m^ and of m^ usually indented. 



For external and cranial measurements, see table at end of 

 volume. 



