Color. Cinnamon rufous in summer; in winter the pelage is 

 darker. 



Aleasurements. Total length, average, 150; tail vertebrae, 63; 

 hind foot, 17. 



560. pribilofensis. {Sorex), Merr. , N. Am. Faun., No. 10, 1895, p. 



87, pi. ix, figs. 3, 3a. 



Type locality. St. Paul Island, Pribilof Islands. 



Genl. Char. Size rather small; tail short, thick and remarkably 

 hairy; unicuspids diminishing from before backwards, as in 5. per- 

 sonatus ; third larger than fourth. 



Color. Head and band down the back chocolate brown, sides 

 dull, ochraceous buff; under parts dirty white; chin, throat and feet, 

 white; tail brown above, white beneath. 



Measurements. Total length, 107 ; tail vertebra, 35 ; hind 

 foot, 13.5. 



561. merriami. [Sorex), Dobson, Mon. Insectivora, Part III, fasc. 



I, 1890, pi. xxiii, fig. 6. 



Type locality. Fort Custer, Montana. 



Geogr. Distr. Only known from type locality. 



Genl. Char. Size medium; tail not quite so long as body, ears 

 very large. Skull: brain case flat; rostrum and palate short, broad; 

 second unicuspid the largest; fourth smaller than third; middle inci- 

 sor without secondary cusp on inner side. 



Color. Above ash gray tinged with buffy; sides and beneath, 

 white; feet white; tail above buffy white, beneath white. 



Measurements. Total length, 90; tail vertebrae, 36; hind foot, 11. 



a. — miscix. {Sorex), Bangs, Proc. N. Eng. Zool. Soc, i, 1899, p. 15. 



Type locality. Black Bay, Labrador. 



Geogr. Distr. Labrador. 



Genl. Char. Large as 5. /. streatori Merr. from Alaska; hind 

 foot larger than in .S. personatus ; colors paler and grayer at all sea- 

 sons, but especially so in winter. Skull much larger, brain case 

 much higher, foramen magnum smaller and narrower. 



Color. Summer Pelage. Upper part broccoli brown, shading on 

 rump towards sepia, the amount of sepia varying much in different 

 individuals, in some skins spreading well up over the back; under 

 parts pale smoky gray; tail, feet and hands as in S. personatus. 



Winter Pelage. Upper parts, drab gray; under parts, base of hairs 

 slate gray; tips silvery gray, the basal slate gray showing in places; 

 tail more hairy than in summer and more sharply bicolored. 



Measuronents. Total length, 104; tail vertebras, 44; hind foot, 

 14 (Bangs 1. c.) 



