:{40 PEROGNATHUS. 



c. Perognathiis p/niicil/atus areiuiriiis (Merriam). 



Perognathus arenarius Merr., Proc. Cal. Acad. Scien., 2d Ser,, 



IV, 1894, p. 461. 

 Perognathus penicillatus arenarius Elliot, Mamm. Middle Amer. 

 & W. Indies, F. C. M. Pub., iv, Pt. i, 1904, p. 358. Zool. Ser. 

 Id. Check-L. Mamm. N. Amer. Cont. & W. Indies, F. C. M. 

 Pub,, VI, 1905, p. 312. Zool. Ser. 

 Little Desert Pocket Mouse. 



1-14. Adult d^ Coll. San Felipe, Lower California, Mexico. E. 

 Heller. 

 15-21. Adult 9 Coll. San Felipe, Lower California, Mexico. E. 

 Heller. 



575. Perognathus helleri Elliot. 



Perognathus lielleri Elliot, Pub. Field Columb. Mus., in, 1903, p. 

 166. Zool. Ser. Id. Mamm. Middle Amer. & W. Indies, F. 

 C. M. Pub., IV, Pt. I, 1904, p. 360. Zool. Ser. Id. Check-L. 

 Mamm. N. Amer. Cont. & W. Indies, F. C. M. Pub., vi, 1905, 

 p. 312. Zool. Ser. 

 Heller's Pocket Mouse. 



i-ii. Adult cJ* Type and paratypes. Coll. San Quentin, Lower 

 California, Mexico. E. Heller. 

 12-19. Adult 9 Paratypes. Coll. San Quentin, Lower Califor- 

 nia, Mexico. E. Heller. 



576. Perognathus Stephens! Merriam. 



Perognathus stephensi Merr., Proc. Acad. Nat. Scien. Phil., 1894, 

 p. 267. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, 

 p. 253. Zool. Ser. Id. Check-L. Mamm. N. Amer. Cont. & 

 W. Indies, F. C. M. Pub., vi, 1905, p. 312. Zool. Ser. 

 Stephens's Pocket Mouse. 



I. Adult 6" Topotype. Coll. Mesquite Valley, Death Valley, 

 California. E. Heller. 

 2-3. Adult 9 Topotypes. Coll. Mesquite Valley, Death Valley, 

 California. E. Heller. 



577. Perognathus fallax Merriam. 



Perognathus fallax Merr., N. Am. Faun., No. i, 1889, p. 19. 

 Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 254. 

 Zool. Ser. Id. Mamm. Middle Amer. & W. Indies, F. C. M. 

 Pub., IV, Pt. I, 1904, p. 366. Zool. Ser. Id. Check-L. Mamm. 

 N. Amer. Cont. & W. Indies, F. C. M. Pub., vi, 1905, p. 314. 

 Zool. Ser. 

 Short-eared California Pocket Mouse. 



I. Adult 6^ P. Elsinore, California. J. Rowley. 



