14 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 



long black-tailed, partly dusky-footed, style of Hesperomys witnessed in such 

 a species as Nyctemys sumickrasti ; thirdly, the still more peculiar N. cinerea 

 of British America and various western Territories — an animal that, although 

 a true Neotoma, shows ns the densely hairy, almost bushy tail of Mijoxus — a 

 condition, in fact, thai would almost equal a squirrel's, were the tail perfectly 

 distichous instead of rather terete. It has, indeed, been made the type of a 

 different genus, Teonoma, but this, like many of Dr. J. E. Gray's genera, need 

 not be adopted. We tabulate the three species, together with the Guate- 

 malan one. 



Analysis of species of Neotoma. 



1. Tail scant-haired (nearly as in Mus), bicolor, grayish and 



whitish, in length at most barely equaling the body without 

 the head. Feet entirely white. Adults with the general 

 body-colors of the Norway rat, but more fulvous on the 

 sides ; white below ; young, gray or slate. Upward of 9 

 inches long; tail upward of 6; hind foot upward of 1.50. 

 Skull averaging 2 inches floeidana. 



2. Tail scant-haired, as before, unicolor, blackish, nearly as long 



cs head and body (up to 8J inches). Feet partly dusky. 

 General body-colors as before, if anything darker. Aver- 

 aging larger than the last! fuscipes. 



3. Tail scant-haired, as before, unicolor, blackish, nearly as 



long as head and body. Feet partly dusky. General body- 

 colors of adults rich warm rusty-red, hardly darker on the 

 back ; under parts snowy, with distinct line of demarkation. 

 S?nall ; upward of 7 inches; tail nearly as much; hind 

 foot under 1.50 ; skull about 1.75 ferruginea. 



4. Tail densely hairy (as in Myoxus), bicolor, brown or gray, 



and white. Size of jloridana, or even larger; body-colors 

 of jloridana, but varying between dark plumbeous and pale 

 1 uteous cinerea. 



NEOTOMA ELORIDANA, Say & Ord. 



Wood Kat. 



Mus Jloridamts, Ord, Bull. Soc. l'liilom. Fhila. 1818, 181.— DeSMArest, Mamm. ii, 1822, 307.— Say, Long's 



Exped. R. Mts. i, 182::, 54. 

 Arvkola floridanve, U.\t LAN, Fn. Amer. 1825, 141; Med. and Pbys. Res. 1835, 53, pi. x, f. 1, 2, 3, 4. 



