Microtus. 



563 



33§0. modestus. Baird. Manmi. N.-Am., 1857, 

 p. 535: Allen, Bull. Am. Mus., V, 1893, 

 p. 73 (sub A. azteco). 



3 3 vt 1 . Drummondi. Aud. et Baehrn, Quadr. N.- 

 Am.. 1854. p. 166: Baird, Mam. N.-Ani, 

 1857. p.550: Bhoads, Proe. Acad. PMlad., 

 1894. p. 287. 



3392. xanthognathus, Leach (nec Haiian), Zool. 

 Misc, 1814. I. p. 60. pl. 26; Aud. et 

 Baclim.. Quadr.. 1853, II. pl. 125: Coues. 

 Rod... 1877. p. 197, pl.1T, fig. 54—57; 

 Miller, Proc. Bost. Soc, 1894, pl. 3 et 4. 



3393. chrotorrhinus. Miller, Proc. Bost. Soc, 

 XXVI. 1894. p. 190. pl. 3 et 4. 



3394. borealis, Bicliards., Zool. Journ.. 1828, 

 p. 517: Fauua Bor.-Am., 1829, I, p. 127; 

 Aud. et Bachni.. Quadr.. 1854, p. 134; 

 Rhoads, Proc Acad. Philad, 1894, p. 285, 

 286, fig. 1. 



3395. rufidorsum, Baird. Marnni. N.-Am., 1857, 

 p. 526. 



3396. occidentalis. Peale. Mam. U. S. Expl. Exp, 

 1848, p.44: Baird, Mam. N.-Am, 1857, 

 p. 534. 



•'3397. californicus. Peale, Mam. U. S. Expl. Exp, 

 1848, p. 45: Baird, Mam. N.-Am, 1857, 

 p. 532. 



3398. montanus, Peale, Mam. U. S. Expl. Exped, 

 1848, p.46; Baird, Mam. N.-Am, 1857, 

 p. 528. 



3399. ytexianus, Aud. et Bachm. ; Baird, Mam. 

 N.-Am.. 1857, p. 552. 



3400. longicaudus. Merriam, Amer. Natur, XXII, 

 1888. p. 934, fig. (cran.). 



3401. alticolus, Merriam, N.-Am. Fauna, N° 3, 

 1890. p. 67. pl. 5et6; Allen, Bull. Am. 

 Mus., 1893, p. 72; 1895, p.219. 



Colorado, M s Saxosi, 

 Sawatch Pass. 



America Sept.-Occ, 



M s Saxosi, Columbia 



Britann. 



America Sept, ab 

 Alaska ad Labrador, 

 Canada, fl. Mackensie, 



Reg. Hudson-Bay. 



United-States, New- 



Hampshire, 



M s Washington. 



America boreali, 



Canada, ab Hudson- 



Bay ad Columbiam 



Brit, (Great Bear 



Lake sept, Fort 



Anderson). 



MassachUsetts. 



America Sept.-Occid, 

 Puo-et-Sound. 



California. 



Nebraska Occid., 



California, Petaluma. 



Monterey. 



Texas. 

 Dakota. 



Arizona, M s San 

 Francisco, Little 



Spring (2500 m. alt.), 

 White Mountains, 



Colorado, La Plata Co. 



