2OO FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. i. 



16. Reithrodontomys megalotis deserti. 



Reithrodontomys megalotis deserti. Allen Bull, Am. Mus. 

 Nat. Hist., 1895, vol. vii, p. 127. 



A single specimen of this sub-species from Woodford, Alpine 

 Co. 



17. Neotoma Cinerea. 



Neotoma cinerea. (ord). Baird U. S. P. R. R. Exp., vol. viii, 

 1857, p. 499. 



Twenty-two specimens adult and young, from Woodford, Alpine 

 Co. These examples were all taken in the month of August, and 

 range from the young, not over eight and a half inches in total 

 length of body and tail to the full-grown animal. The young are 

 covered with a blue-gray fur, quite different in appearance from 

 that of the adult, and the fur in all ages is very soft and silky. 



18. Neotoma Desertorum. 



Neotoma desertorum. Merr. Proc. Biol. Soc. , Wash., vol. ix. , 

 1894, p. 125. 



Five specimens from Anderson River, Douglas Co., Nevada. 



The examples agree very well in measurement with the average 

 given by Merriam (1. c.), of eight males from Furnace Creek, 

 Death Valley, California. None of them I should judge, however, 

 to be fully adult, or, rather, old individuals. None are pinkish 

 buff on the upper parts, as described of the type, but as they 

 were collected in August this may be a seasonal coat, the pinkish 

 phase being assumed later, and this view appears to be sustained 

 by specimens in the collection of the Am. Mus. Nat. Hist, 

 taken in March and May, which have the pinkish or reddish coat. 

 Dr. Merriam' s specimens were taken in January. The gray 

 pelage would therefore seem to be characteristic of summer. 

 Two specimens have the under parts deep buff; in one the white 

 chest spot is barely visible. Tails of all the examples dusky above, 

 buffy white beneath. 



19. Neotoma fuscipes. 



Neotoma fuscipes. Baird. U. S. P. R. R. Expl. Exp., vol. 

 viii, p. 495. 



One hundred and sixty-eight specimens from Portola, San 

 Mateo Co., obtained in the months of December, January, 

 March and April. 



This large wood rat is generally recognizable by its size, by the 



