I 



207 



6. Leminus alascensis Merriam. 



1843. ? Ml/odes albigularis Wagner, Schreber's Saugethiere Suppl., 



p. 602. 

 1885. Mijodes obcnsis True, Proc. U.S. Nat. Mus., 7, (1884), p. 596 



(in part). 

 1900. Lfitimus alascensis Merriam, Proc: Washington Acad. Sci., 2, 



p. 26; Miller, " List," 1912, p. 206; " List " 1924, p. 396. 



Tijpe.—U.S. Nat Mus., No. f ^ (Merriam Collection) ; " adult " 

 female. 



Type locality. — Point Barrow, Alaska. 



Range. — Point Barrow and St. Michaels, Alaska. 



Characters. — Size medium (slightly smaller than either L. 

 lemmus or L. nigripes) ; ears smaller than in L. nigripes ; feet and 

 nose pale. Colour golden fulvous, darkest on head, where it 

 is mixed with black hairs ; brightest on sides, where it is almost 

 orange fulvous ; palest on feet and around mouth. 



Skull like that of L. lemmus, but slightly smaller, with smaller 

 and less flattened braincase and less widely spreading zygomata ; 

 angle of mandible much less everted. Upper incisors broader. 

 Compared with the skull of L. nigripes that of the present animal 

 is said to be " decidedly smaller and less massive; nasals much 

 shorter and smaller ; rostrum more slender ; frontals not elevated 

 into tubercles anteriorly; angle of jaw much smaller and less 

 everted. Molar series shorter." 



For external measurements, see table at end of volume. 



(Skull measurements not recorded.) 



Remarks. — Probably based upon young material. 



Myodes albigularis Wagner, was based, according to Midden- 

 dorff (Sibir. Reise, 2, Th. 2, p. 107), probably upon a specimen 

 from the N.W. coast of America. 



7. Lemmus yukonensis Merriam. 



1900. Lemmus yiikone^isis Merriam, Proc. Washington Acad. Sci., 2, 

 p. 27; Miller, " List," 1912, p. 207; " List " 1924, p. 396. 



Type.—V.S. Nat. Mus., No. 98849; adult female, collected 

 August 9, 1899, by W. H. Osgood. 



Type locality. — Charlie Creek, Yukon River, Alaska. 



Characters. — Size small, ears relatively large. General colour 

 dark anteriorly, with bright fulvous or rufous rump and flanks. 

 Head, shoulders, and anterior half of back greyish-brown, grizzled 

 with black and yellowish-fulvous, darkest on top of nose ; rump 

 and hinder part of back rich rusty fulvous or orange fulvous ; 

 lower sides and belly golden fulvous, deepest and brightest on 

 flanks ; sides of nose greyish or greyish-brown ; a band of golden 

 fulvous on lower part of face from nose to below ear. Hands 

 and feet dusky. Tail bicoloured, dusky above, bufEy below. 



Skull with braincase large and broad, produced posteriorly 

 to cover the enlarged bullae; frontal narrow iuterorbitally, with 



