31f. 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. I'ri-injiKitlmx xi>iiiutnx ]>fiii nxii l<t> Merriam. 



Perognathus spinatns peninsula 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. I'ri-uiiinitlntx x/tiiirrfttx hnjniiti (Merriam). 



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



1894, p. 45 8 - 

 Perognathns 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 Jose Island, Lower California, Mexico. 

 Geogr. Distr. Known only from the type locality. 



779. Perognathus margaritae Merriam. 



Perognathns margarita Merr., Proc. Cal. Acad. Scien., 2d Ser., iv, 

 1894, p. 459. Elliot, Mamm. Middle Amer. & W. Indies, 

 F. C. M. Pub., iv, Pt. i, iQ04, p. 363. Zool. Ser. 

 MARGARITA POCKET MOUSE. 



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



Geogr. Distr. Known only from the type locality. 



H .Genus 99. IIHcroinvs. Spiny Pouched Rats. 



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



Type Mus anomalus Thompson. 

 Dasynotns \Vagl., Nat. Syst. Amphib., 1830, p. 21. 

 Saccomys F. Cuv., Mt'-m. Mus. Hist. Nat. Paris, x, 1823, p. 419. 

 Xylomys Merr., Proc. Biol. Soc. Wash., xv, 1002, p. 43. 

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



* 



Subgenus A. Heteromys. 



780. Heteromys irroratus Gray. 



Heteromys irrortitus dray, Proc. Zool. Soc., 1868, p. 205. Elliot, 

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

 1904, p. 369. Zool. Ser. 



