1894. PROCEEDINGS OF THE NATIONAL MUSEUM. 355 



.feet white. Hind feet with the proximal half of the metatarsus, and 

 also the base of the toes, dusky. Tail black above, buffy-gray below. 

 Ears dusky. 



(Skull wanting.) 



Dimensions of the type (a dry skin, No. 3370, U.S.N.M.). — Head and 

 body, 215 mm.; tail vertebra, 180; hind foot (and claw), 44. 



Type.—^o. 3370, U.S.N.M., Fort Umpqua, Oreg. Collected by E. P. 

 Volluni. 



Dr. Merriam has recently stated* that the skulls of the bushy-tailed 

 Wood Hats, which constitute the genus Teonoma of Gray, are without 

 vacuities at the sides of the presphenoid, and regards this as a charac- 

 ter of importance. The bushy tailed species of the Rocky Mountains 

 {N. cinerea), however, has large vacuities. They are absent only in 

 N. occidentalis and its varieties. Hence this charactei is not corre- 

 lated with the condition of the tail. There is, furthermore, much 

 variation in the Size of the vacuities in the scaly-tailed species, those 

 of N. Jloridana and varieties being very small. 



A Neotoma from Fort Liard, British America, has the skull similar 

 to N. occidentalis, and Richardson's N. drummondi is perhaps a variety 

 of this species, with no close relationship to K. cinerea of the Rocky 

 Mountains of the United States. 



Proc. Biol. Soc. Washingtou, viii, p. 112, 1893. 



