Microtus. 457 
P. Hyperacrius, Miller, 1896. 
Miller, North- American Pauna, No. 12, 1896, p. 9, 54. 
4639. fertilis, True — (3339). Cachemyr Centrali 
(M 8 Pir Panjal et 
Kaj Nag, 
2300 — 4000 m.). 
4640. aitchisoni, Miller — (3340). Cachemyr (Gulmerg, 
3000 m.). 
G. Steneocranius, Kascenko, 1901. 
Microtus, p., Poliakoff, 1881. 
Kascenko, Annuaire Mus. Zool. S l Petersb., VI, 1901, p. 166. 
4640 bis slowmwi. Poliakoff, 1881; Kascenko, Siberia. 
1. c., 1901. p. 166. 
H. Platycranius, Kascenko, 1901. 
Kascenko, Ann. Mus. Zool. S* Petersb., 1901, p. 166. 
4640 ter - strelzowi. Kascenko, 1898; id., 1. c., 1901, Siberia. 
p. 166. 
I. Orthriomys, Merriam, 1898. 
Merriam, Proc. Biol. Soc. Wash., 1898, p. 106. 
4641. umbrosus. Merriam — (3340 B ); Bailey, Mexico, Oaxaca 
North-Am. Fauna, 17, 1900, p. 77, 76, (M s Zempoaltepec, 
fig. 15, pl. 2, fig. 8. 2700 m.). 
J. Herpetomys, Merriam, 1898. 
Merriam, Proc. Biol. Soc. Wash., 1898, p. 107. 
4642.guatemalensis, Merriam — ( 3340 c ); Bailey, 
1. c., 1900, p. 78, fig. 16, pl. 2, fig. 9. 
Guatemala (Todos 
Santos, 3300 m.). 
K. Pedomys, Baird, 1857. 
Baird, Mamm. North- Amer., 1857, p. 517. 
4643. austerus, Le Conte — (3341); Bailey, 
N.-Amer. Fauna, 17, 1900, p. 73, f. 14, 
pl. 3, f. 4; Elliot. Pield Columb. Mus., 
1901, p. 196, fig. 40. 
? ochrogaster, Wagner, 1843. 
ciiinainomcvs, Baird, — (3343). 
4644. ludovicianus, Bailey, 1. c., 1900, p.74; Elliot, 
1. c., 1901, p. 197. 
United States 
(Wisconsin), Vallo 
Mississipi usque ad 
Missouri Merid., 
Oklahoma,Kansas Or., 
Nebraska. 
LouisiauaMerid.-Occ., 
Iowa (Calcasieu 
Parish). 
