488 



BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



Description. — Size, small. Length, .300 mm.; tail vertebrae, 125; 

 hind foot, 30; ear from crown, 27. Ears, large. Pelage remarkably 

 long, soft, and silky. Color above ochraceous buff; head smoke gray; 

 under parts, white, sometimes faintly washed with pinkish buff; tail, 

 bicolor, dusky above, white below. 



Cranio/ and dental characters. — Skull light, with remarkably large 

 tympanic bullae. 



Remarks. — On the Mexican Line this beautiful species has been 

 found only a (Yuma, on the Colorado River. 



NEOTOMA FUSCIPES MA- 

 CROTIS (Thomas). 



SAN DIEGO "WOOD-RAT. 



Neotoma macrotis Thomas, Ann. 

 andMag.Nat.Hist.,6thSer., 

 XII, Sept., 1893, pp. 234, 

 235 (from San Diego, Cali- 

 fornia ; original description). 



Neotoma macrotis simplex True, 

 Proc. U.S. Nat. Mus., XVII, 

 1894, p. 354 (advance sheet 

 issued June 27, 1S94). (A 

 pale interior form). 



Neotoma fusdpes macrotis, Mer- 

 RIAM, Proc. Acad. Xat. Sci. 

 Phila., 1894, p. 242.— Mil- 

 ler and Reiin, Proc. Bost. 

 Soc. Xat. Hist., XXX, No. 

 1, Dec. 27, 1901, p. 104 

 (Syst. Results Study X . Am. 

 Mam. to close of 1900). 



[Neotoma fuseipes] macrotis , 

 Elliot, Field Col. Mus., 

 Zool. Ser., II, 1901, p. 159 

 (Synop. Mam. X. Am.). 



Type-locality. — San 

 Diego, California. (Type, 

 skin and skull, in the 

 British Museum.) 

 Geographical range. — Pacific Coast Tract of southern and Lower 

 California; inhabits the Sonoran Zone. 



Description. — Size, rather large. Length, 370 mm.; tail verte- 

 brae, 170; hind foot, 35; ear from crown, 25; Skull, 47 by 25. Above 

 russet-drab, mixed with blackish; head and limbs mouse-gray; feet 

 (fig. 120h and c) with the usual white color more or less replaced by 

 dusky or blackish down to the toes; under surface, white (except the 

 tail), more or less washed with ochraceous bull' across the abdomen; 

 tail (fig. 120c/) not distinctly bicolor, but black, slightly mixed with 

 gray above and sooty grayish below: ears (fig. \'20<t) large, scantily 

 haired, faintly edged with grayish white, and blackish on anterior third 



b c d 



Fig. 120.— Neotoma fuscipes macrotis. a, ear; b. pore 

 foot: c, hindfoot; d, tail. 



