Microdipodops, Perognathus. 
481 
747. Microdipodops, Merriam, 1891. 
Merriam, North-Amer. Fauna, No 5, 1891, p. 115. 
48G3. megacephalus, Merriam — (3525); Elliot, 
Field Columb. Mus., II, 1901, p. 240, 
fig. 55, et 241. 
a. — oregonus, Merriam, Proc. Biol. Soc. 
Wash. 1901, p. 127. 
4804. pallidus, Merriam, 1. c., 1901, p. 127. 
4865. californicus, Merriam, 1. c., 1901, p. 128. 
Ne vada Centrali 
(Halleck). 
Oregon Or., Alvord 
Desert, (Lac Alvord). 
Ncvada, Cburchill Co., 
(Lac. Humboldt et 
Carson). 
Califomia, PlumasCo., 
(Vinton, Vallo Sierra). 
Subfam. 2. Heteromy inae. 
748. Perognathus, Wied, 1839. 
Abromys, Gray, 1868; f Cricetodipus, Peale, 1848 (nec Rhoads, 1893, 
nec Trouessart, 1897); Otitognosis , Coues, 1875. 
Maximilian von Wied, Reise Innere Nord-America, 1839, I, P- 449; 
Nov. Act. Acad. Caes. Leop. Carol., 1839, 19, p. 369. 
Recognitio. 
1900. -- W. H. Osgood, Revision of the Pocket Ilice of the Genus Perognathus 
(North-Amer. Fauna, No 18, 1900, p. 9 — 63; fig. in texto et 4 pl.). 
A. Perognathus. 
4866. fasciatus. Wied — (3523); Elliot, Field 
Columb. Mus., II, 1901. p. 242; Osgood, 
N.-Am. Fauna, 18, 1900, p. 18, 19, f. 3. 
a. — infraluteus, Thomas — (3527); 
Elliot, 1. c., 1901, p. 242; Osgood, 1. c., 
1900, p. 19. 
4867. flavescens. Merriam — (3526 n); Elliot, 
1. c., 1901, p. 243; Osgood, 1. c., 1900, 
p. 20, f. 4. 
copei, Roads — (3530). 
4868. merriami. Allen — (3529); Elliot, 1. c., 
1901, p. 243; Osgood, 1. c., 1900, p. 21. 
flavus, p., Baird (3528 part.); Thomas, 
P. Z. S., 1888, p. 449 (Cricetodipus). 
meamsi , Allen, Bull. Am. Mus., 1896, 
p. 237. 
Montana (fl. Yellow- 
stone ad Missouri), 
DakotaSept. etMerid., 
Wyoming. 
Colorado, Larimer Co., 
(Loveland). 
Nebraska (Kennedy), 
I)akotaMerid.,Kansas, 
Texas Occid. 
Texas (Browusville), 
Novo-Mexico, usque 
ad Rio Grande. 
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