CASTOR. MUS. 129 



c. Castor canadentiis jxtrificjis Rhoads. 



Castor canadensis pacificus Rhoads, Trans. Am. Philos., 1898, 

 p. 422. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, 

 p. 117. Zool. Ser. 

 Pacific Coast Beaver. 



Type locality. Lake Kichelos, Cascade Mountains, Kittitass 

 County, Washington. 



Geogr. Distr. Pacific Slope ; California to Alaska. 



Family IV. Muridje. Ratx. ^Iii*e. Voles. 



Subfamily I. Murinse. 

 Genus 58. 31 lis. 



Mus Linn., Syst. Nat., i. 1758, p. 59; i, 1766, p. 79. Type Mus 

 rattiis Linnaeus. 



250. Mus rattus Linnaeus. 



Mw5 rattus Linn., Syst. Nat., i, 1758, p. 61 ; i, 1766, p. 83. Elliot, 

 Syn. N. Am. Mamm.. F. C. M. Pub., 11, 1901, p. 117, fig. 28. 

 Zool. Ser. Id. Mamm. Middle Amer. & W. Indies, F. C. M. 

 Pub., IV, Pt. I, 1904. p. 163, figs. 31, XXXV. Zool. Ser. 

 Black Rat. 



Type locality. Sweden. 



Geogr. Distr. Cosmopolitan. 



251. Mus norvefficus Erxleben. 



Mus noruegiciis Erxl., Syst. Regn. Anim., 1777, p. 381. Elliot, 



Syn. N. Am. Mamm., 11, 1901, Append., p. 428. Zool. Ser. 



Id. Mamm. Middle Amer. & W. Indies, F. C. M. Pub., iv, 



Pt. I, 1904, p. 164. Zool. Ser. 

 Mus decumanus Pall., Nov. Sp. Quad. Glir., 1778, p. 91. Elliot, 



Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 117. Zool. Ser. 

 Norway Rat. 



Type locality. Norv\'ay. 

 Geogr. Distr. Cosmopolitan. 



252. Mus alexandrinus I. Geoffroy. 



Mus alexandrinus I. Geoff., Descr. Egypte, 11, 1813, p. 733; Atl. 

 pi. V, fig. I. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 

 II, 1901, p. 118. Zool. Ser. Id. Mamm. Middle Amer. & W. 

 Indies, F. C. M. Pub., iv, Pt. i, 1904, p. 164. Zool. Ser. 



Mus tectorum Savi, Nov. Giorn. di Lett., 1825. 



