=Perognathus flavus piperi= Goldman. BUFFY POCKET MOUSE.--In the description of _P. f. bunkeri_, Cockrum (1951:206) allocated to the new subspecies, without comment, a specimen from Alliance, Box Butte County. I have examined this specimen along with all other Nebraskan specimens known to me and, although all approach _bunkeri_ in cranial measurements, they seem best referred to _piperi_ on the basis of darker dorsal coloration and larger external measurements. Additional records of occurrence, several of them marginal to the eastward, are: 10 mi. S of Antioch, Garden County, 1 (MZ); Kelso, Hooker County, 4 (MZ); 5 mi. N of Bridgeport, Morrill County, 1 (MVZ); 6 mi. N of Mitchell, Scotts Bluff County, 1 (NSM). A specimen not seen by me that was reported from Valentine, Cherry County (Beed, 1936:21), is presumably also best referred to _P. f. piperi_. No specimens of _P. flavus_ are known to me from south of the Platte River in southwestern Nebraska although they probably occur there. If so, they may be referable to _P. f. bunkeri_, which is found in counties of Kansas adjoining the southwestern part of Nebraska. =Perognathus hispidus paradoxus= Merriam. HISPID POCKET MOUSE.--This subspecies occurs commonly in central-and western-Nebraska. Eastern marginal records of occurrence are: 2 mi. SE of Niobrara, Knox County, 1 (NGFPC); 4 mi. E, 2 mi. S of Ord, 1; Bladen, Webster County, 2 (HM). =Perognathus hispidus spilotus= Merriam. HISPID POCKET MOUSE.--Jones and Webb (1949:312) first reported this subspecies in Nebraska as from 5 mi. SE of Rulo, Richardson County. Additional records of occurrence are: 3 mi. SW of Barnston, Gage County, 1 (NGFPC); Bennet, 1 (NSM), 9 mi. NW of Lincoln, 1 (NSM), 1-1/2 mi. S of Lincoln, 1 (NSM), Lancaster County; Peru, Nemaha County, 1 (NGFPC); 3 mi. S, 2 mi. E of Nebraska City, Otoe County, 3; Barada, Richardson County, 1 (NSM); Pleasant Dale, Seward County, 1 (NSM); 1 mi. S of Williams, Thayer County, 1.