316 perognathus. heteromys. 



Spiny Pocket Mouse. 



Type locality. Twenty -five miles below the Needles, Colorado 

 River, San Bernardino County, California. 



Geogr. Distr. Southern California, and northern Lower California, 

 Mexico. 



a. Fero^nathiis spinatiis peninsulce Merriam. 



Perognathus spinatus peninsidcB Merr., Proc. Cal. Acad. Scien., 

 2d Ser., IV, 1894, p. 460. Elliot, Mamm. Middle Amer. & W. 

 Indies, F. C. M. Pub., iv, Pt. i, 1904, p. 363. Zool. Ser. 

 Cape St. Lucas Pocket Mouse. 



Type locality. San Jose del Cabo, Lower California, Mexico. 

 Geogr. Distr. Cape region of Lower California. 



h. PeTo^nathiis fipinafiis hyi/rniti (Merriam). 



Perognathus bryanti Merr., Proc. Cal. Acad. Scien., 2d Ser., iv, 



1894, p. 458. 

 Perognathus spinatus bryanti Elliot, Mamm. Middle Amer. & W. 

 Indies, F. C. M. Pub., iv, Pt. i, 1904, p. 364. Zool. Ser. 

 Bryant's Pocket Mouse. 



Type locality. San ]os6 Island, Lower California, Mexico. 

 Geogr. Distr. Known only from the type locality. 



779. Perognathus margaritas Merriam. 



Perognathus margaritce Merr., Proc. Cal. Acad. Scien., 2d Ser., iv, 

 1894, p. 459. Elliot, Mamm. Middle Amer. 8z W. Indies, 

 F. C. M. Pub., IV, Pt. I, 1904, p. 363. Zool. Ser. 

 Margarita Pocket Mouse. 



Type locality. Santa Margarita Island, Lower California, Mexico. 

 Geogr. Distr. Known only from the type locality. 



Crenus 99. Ileteroiiiys. Si)iiiy Pouched Kats. 



Heteromys Desm., Nouv. Diet. Hist. Nat. Mamm., 1817, p. 313. 

 Type Mtis anomalus Thompson. 

 Dasynotiis Wagl., Nat. Syst. Amphib., 1830, p. 21. 

 Saccomys F. Cuv., Mem. Mus. Hist. Nat. Paris, x, 1823, p. 419. 

 Xylomys Merr., Proc. Biol. Soc. Wash., xv, 1902, p. 43. 

 Liomys Merr., Proc. Biol. Soc. Wash., xv, 1902, p. 44. 



Subgenus A. Heteromys. 



780. Heteromys irroratus Gray. 



Heteromys irroratus Gray, Proc. Zool. Soc, 1868, p. 205. Elliot, 

 Mamm. Middle Amer. & W. Indies, F. C. M. Pub., iv, Pt. i, 

 1904, p. 369. Zool. Ser. 



