﻿Dec, 1895.] 



SOREX RICHARDSONL 



63 



locality (Yakutat Bay, Alaska) : Total length, 106.6 mm. ; tail vertebrae, 

 45.6 mm.; hind foot, 12.7 mm. 



General remarlcs. — The slight change that Sorex personatus undergoes 

 in crossing the continent from the Atlantic to the Pacific is surprising. 

 Skulls from Montauk Point, Long Island, JN^ew York, are hardly dis- 

 tinguishable from those from Yakutat Bay, Alaska, except that the 

 latter are sonie'>Yhat larger. Externally, the difference is a little more 

 marked; there is a slight increase in size and in length of tail, and a 

 decided darkening of the color of the upi^er iDarts as a whole. 



Specimens examined. — Total number, 36, from the following localities 

 in southeastern Alaska: Y^akutat, 8; Sitka, 16; Wrangel, 7; Loriug^ 

 Kevillagigedo Island, 5. 



Mean measurements of Sorex personatus and S. p. streatori from different localities. 





Total 

 length. 



Tail. 



Hind 

 foot. 



Xo. of 

 speci- 

 mens 

 in av- 

 erage. 



Sorex jyei'sonatus .■ 













94.5 



35, 3 



11. 3 



4 



Drury Eun, Clintou County, Pa 



96 



39.3 



11. 7 



3 





98.6 



40. G 



38 



12.8 



5 





98.3 



12. 1 



8 





98 



39.5 



12.5 



2 





100 



40.5 



12 



2 



Godbout, Quebec, Canada 



100 



41 



12 



15 





100.5 



41 



12.3 







106.4 



42.2 



12.8 



5 





95.7 



40 



11.7 



4 





93 



36.5 



11 



2 



>S'. ])ci i;iiiiiittis stfeatori : 











Yakutat. Alaska (type locality) 



1U6. 6 



45. 6 



12.7 



8 



Sitka, Alaska 



108. 1 



46.9 



13.4 



15 





108. 1 



45. 5 



13.2 







105 



46 



13 



4 



* Inclining toward streatori. t Type locality of ' idahoensis : I Typical of 'forsteri. ' 



SOREX RICHARDSON! Bach. 

 (PI. IX, figs. 1, Ifl.) 



Sorex parvus Richardson, Fauna Boreali-Americana, 8, .1829 (Xot S. parvus Say, 1823). 

 Sorex richardsonii Bachuiau, Jour. Acad. Nat. Sci. Phila., VII, 383, PL XXIV, fig. 5, 

 1837. 



Type 7oc« ///?/.~Unknown; probably plains of Saskatchewan. 



GeograpMc distribution —Vl^iw?^ of Saskatchewan and boreal parts 

 of Minnesota; limits of range unknown. 



General characters.— ^izQ large (hind foot, 14 mm.) ; tail short ; animal 

 tricolor. 



Color. — Upper parts uniform dull dark brown (almost seal brown in 

 some specimens), without plumbeous tinge, and free from admixture of 

 hoary or pale-tipped hairs; sides dull fulvous or ochraceous, in strong 

 contrast; under parts dark plumbeous washed with chestnut; tail 



