14 



MONOdHAPIIS OF NOllTfl AMERICAN ItODENTIA, 



long blnck-tnilcd, partly (lusky-footca. style of He^peromys witnessed in such 

 a species ns Nijdemys sumkhraMi ; tiiinlly, tlie still more peculiar N. cinerea 

 of Uritisii America and various western Territories— nn animal tiiat, although 

 a true Ncotomn, sliows us the densely luiiry, almost l)ushy tail of Myozus—n 

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

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

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

 not l)e adopted. We tabulate the three species, together with the Guate- 

 malan one. 



Analysis of species of Nkotoma. 



1. Tail scANT-iiAiKEi) (nearly as in Mus), hicolor, 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, l)ut 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 FLORIDASA. 



2. Tail scant-haiked, as before, nnicolor, blackish, nearly as long 



as head and body (up to 8^ inches). Feet pnrtly dusky. 



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



aging larger than the last? FUSCIPES. 



3. Tail seANT-nAiUKD, as before, unicolor, blackish, nearly as 



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



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



l)ack ; vnder parts snowy, with distinct line of demarkation. 



Small; upwr.rd of 7 iuclies; tail nearly as much; hind 



foot under 1.50 ; skull about 1.75 ferruqinea. 



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



and white, ^'izc of Jloridana, or c\cn larger ; l)ody-colors . d 



of Jloridana, but varying between dark plumbeous and pale ' 



luteOUS CINEREA, 



NEOTOMA FLORIDANA, Say & Ord. , ; 



Wood Knt. -' '^ u 



Ifut fionAamm, Obd, Hull. Soc. riiilom. Phila. 1818, 181.— Desmahest, Mamm. il, 1R22, 307.— Sat, Long's 



Expert. R. Mts. i, 1S23, 54. 

 ArricoXa Jloridamis, IIai i.an, Fn. Aiiicr. 1885, 141 j Med. and Pliys, Rc8. 1835, 53, pi. x, f. 1, 8. 3, 4. 



