NEOTOMA. 281 
Color. Above rusty red, somewhat golden on the sides, and 
mixed with black on the back; outside of arms and legs to wrists 
and ankles, dusky; inner side of arms white, of legs grayish; sides 
of lips and under parts white; tail above dusky, beneath paler. 
Measurements. Total length, 343-353; tail vertebra, 165-177; 
hind foot, 33-35. Skull: occipito-nasal length, 46; zygomatic width, 
28; length of nasals, 20; length of upper molar series, ro. 
Fic. XLII]. NEOTOMA MICROPUS. SMALL-FOOTED Woop Rat. 
281. micropus (Neotoma), Baird, Proc. Acad. Nat. Scien. Phil., 1855, 
p. 333. Elliot, Syn. N. Am. Mamm., 1901, p. 155. 
canescens Allen, Bull. Am. Mus. Nat. Hist., 1891, p. 285. 
SMALL-FOOTED Woop Rat. 
Type locality. Charco Escondido, State of Tamaulipas, Mexico. 
Geogr. Distr. State of Tamaulipas, Mexico, northward to Okla- 
homa and New Mexico. 
Genl. Char. Tail short, hardly two-thirds the length of the body; 
ears large; feet small, soles naked. 
Color. Above grayish lead color, lined with dark brown; sides 
paler; shoulders and flanks occasionally tinged with yellowish brown; 
under parts and feet white; tail above dusky, beneath grayish white. 
Measurements. Total length, 359; tail vertebra, 185; hind foot, 
36; ear, 30. Skull: occipito-nasal length, 49; Hensel, 36; zygomatic 
width, 24; interorbital constriction, 6; length of nasals, 6.5; palatal 
length, 19; length of upper tooth row, ro; length of mandible, condyle 
to alveolus of incisor, 25. 
282. leucodon (Neotoma), Merr., Proc. Biol. Soc. Wash., 1x, 1894, p. 120. 
WHITE-TOOTHED Woop Rat. 
Type locality. San Luis Potosi, State of San Luis Potosi, Mexico. 
