Microtus. 
455 
a. — leucophaeus, Allen — (3412); Bailey, 
1. c., 1900, p. 53; Elliot. 1. e., 1901, 
p. 192. 
4015. mogollonensis, Mearus — (340 6'); Bailey, 
1. c., 1900, p. 56; Elliot, 1. c., 1901, p. 192. 
4616. mexicanus, Saussure — (3404); Bailey, 
1. c., 1900, p. 53. 
a. — phaeus, Merriam — (3413); Bailey, 
1. c., 1900, p. 54, 55, fig. 8. 
b. — guadalupensis, Bailey, Proc. Biol. 
Soc. Wash.. 1902, p. 118. 
4617. fulviventer, Merriam — (3404 B ); Bailey, 
1. c., 1900, p. 55. 
4618. xanthognathus, Leach (nec Harlan) — 
(3392); Bailey, 1. c., 1900, p. 57, f. 9; 
Elliot, 1. c., 1901, p. 193. 
4619. chrotorrhinus. Miller — (3393); Bailey, 
1. C., 1900, p. 58; Elliot, 1. c., 1901, p. 193. 
a. — ravus, Bangs, Proc. Biol. Soc. Wash., 
1898, p. 188; Bailey, 1. c., 1900, p. 59; 
Elliot, l. c., 1901, p. 193. 
4020. borealis, Richardson — (3394); Elliot, 
1. c., 1901, p. 194. 
Arizona Merid.- 
Orient., (M s Gratiam), 
Arizona Centrali (M s 
Mogollon, Baker’s 
Butte). 
Mexico, Puebla Or., 
(M s Orizaba). 
Mexico Sept., Jalisco 
(Sierra Nevada de 
Colima, 3300 m.). 
Texas, EI Paso Co. 
(M ,es Guadalupe, 
2600 m.). 
Mexico, Oaxaca 
Centrali, (Cerro San 
Eelipe). 
Canada Sept.-Oee., 
(Hudson Bay), ab 
Alberta Centrali ad 
Alaska. 
New-Harapsbire (M s 
Washington, Cat- 
skills),N ew Brunswick 
Quebec. 
Labrador, 
(Black Bay). 
America Arctica, 
Terr. Hudson Bay, 
(Lac. Great Bear). 
D. Lagurus, Gloger, 1841. 
Geoiychus, p., Eversmann, 1840; Eremiomys, Polyakoff, 1881. 
Gloger, Hand- und Hilfsbuch Naturgesch., I, 1841, p. XXXI, 97. 
4621. lagurus. Pallas — (332 6'). 
4622. luteus, Eversmann — (3327). 
4623. prevalskii Biiclmer — (3328). 
Siberia Occ., ab Oural 
ad Jaik et Asia 
Centrali (3300 m.). 
Turkestan (in Deserto 
ad Lac. Aral). 
Asia Centrali (Gass, 
Zaidara, etc.). 
