54 Bulletin American Museum of Natural History. [Vol. XIX, 



a specimen September 16." In the neighborhood of Shesley 

 River camp none was found, but two specimens were brought 

 in from a distance. 



12. Mus musculus Linn&us. HOUSE MOUSE. 



Three specimens, Telegraph Creek, August 2, 6, and 7. 

 They were trapped about the buildings in the village of 

 Telegraph. 



13. Peromyscus sitkensis Merriam. SITKA WHITE-FOOTED 



MOUSE. 



Peromyscus sitkensis MERRIAM, Proc. Biol. Soc. Wash., XI, July 15, 

 1897, 223. Sitka, Alaska. 



Eight specimens (2 adults, i young adult, 5 half to two- 

 thirds grown young), from Wrangel, June 27-30, and two 

 young adults from Kupreanof Island, November 8. In six of 

 the oldest specimens the tail averages just one-half the total 

 length, varying from a little less to a little more than half. 



According to Mr. Anderson's notes, these specimens "were 

 trapped under rotten logs in the higher and dryer places." 



14. Peromyscus arcticus (Mearns). ARCTIC WHITE-FOOTED 



MOUSE. 



Hesperomys leucopus arcticus MEARNS, Bull. Am. Mus. Nat. Hist., 

 II, No. 4, 1890, 285. Feb. 20, 1890. Fort Simpson, Mackenzie River, 

 Canada. 



All of the white-footed mice from the interior are referred to 

 P. arcticus, except a single specimen from the Cheonnee Moun- 

 tains which appears referable to P. areas Bangs. The series 

 numbers altogether 292 specimens, collected as follows: Tele- 

 graph Creek, 272 specimens, July n August 17; Cheonnee 

 Mountains, 4 specimens, July 22 and 23; Shesley River, 3, 

 August 23 and 24; Level Mountain, 3, September 12-15; 

 Raspberry Creek, 10, October 8-12. About four-fifths of the 

 series consists of young-of-the-year and 'young adults/ Of 

 the large number of females only about 50 give evidence of 



