l6 MERRIAM 



white ; sides of nose and extreme tip of chin whitish ; ankles and 

 hind feet dusky, sprinkled or grizzled with whitish hairs ; tail strongly 

 bicolor ; above dusky at base like back, becoming yellowish buff dis- 

 tally; below, yellowish white. 



Cranial characters. — Compared with Vulpes lagopiis from Lap- 

 land, the skull is shorter both anteriorly and posteriorly (rostrum 

 shorter, and also base of skull behind molars) ; the bullae larger, with 

 an inflated posterior projection pushing out behind the meatus tube 

 and directed outward as well as backward, giving a semicircular curve 

 to the axis of the bullaB (viewed from below) ; meatus tube more 

 sharply defined; basioccipital narrower between bullae. Lower pre- 

 molars (especially 2d and 3d) smaller; 4th upper premolar and ist 

 molar more robust. Ratio of zygomatic breadth to basal length of 

 skull 66.8. [In a Lapland skull this ratio is 58.] 



JMeasiirenieiits. — (Measured in flesh by C. H. M.) Total length 

 825; tail vertebric 290; hind foot 140. 



Cranial jneasure?nents. — Basal length 114; zygomatic breadth 69 ; 

 palatal length 61 ; postpalatal length 53.5. 



SOREX GLACLVLIS sp. nov. Glacier Bay Shrew. 



Type from Point Gustavus, on east side of entrance to Glacier Bay, 

 Alaska, No. 97709 $ ad. U. S. National jSIuseum, Biological 

 Survey Collection. June 12, 1899. A. K. Fisher. Orig. no. 2056. 

 Similar to S. longicai{da but with decidedly smaller fore and hind 



feet (hind foot 14 or less instead of 15 4- )i much smaller skull and teeth, 



and smaller and less conspicuous ears; upperparts darker, underparts 



whiter and lacking tlie brownish fulvous wash which is conspicuous 



in longicanda. 



Color. — Upperparts dark dusky brow'n ; underparts abruptly whitish 



with distinct line of demarkation on side of face and neck; tail above 



and at tip all round, brownish dusky; below buffy. 



Cranial characters. — Skull and teeth as in longicanda (3d uni- 



cuspid smaller than 4th) but skull smaller and shorter, and molari- 



form teeth much smaller. 



Measurements. — Type specimen: total length 122; tail vertebraj 



52 ; hind foot 14. Another male from type locality : total length 123 ; 



tail vcrtebnu 53; hind foot 13. v 



SOREX TUNDRENSIS sp. nov. Tundra Shrew. 



Type from St. Michaels, Alaska. No. 992S6 U. S. National Mu- 

 semn, liiological Survey Collection. Sept. 13, 1S99. W. IL Os- 

 good. Orig. no. 902. 



