Goldman — Tivelve Neiv Wood Rats. 31 



iiiaxilliii relatively longer, reiirliiny- posteriorly nearly to interorbital con- 

 striction; frontals longer ami narrower, the sides slightly upturned. 



Mt'ostirenients. — Type: Total length, 348; tail vertebne, Kil ; hind foot, 38. 



Neotoma ferrusfinea solitaria snbsp. nov. 



7)/l)e from Nenton, Guatemala (altitude, 3500 feet). Adult male, No. 

 7(5,008, U. S. National Museum, Biological Survey Collection. December 

 17, 1895. E. W. Nelson and E. A. Goldman. Original number 8813. 



General cliiiraricrft. — Similar in general to N'.ffrriu/inen, ]>nt smaller; fur 

 shorter; color brighter; outer sides of forearms and hind legs not dusky 

 as in N.ferriujinea. 



Color. — Upperparts tawny ochraceous, brightest along sides, becoming 

 ochraceous butf on head, outer sides of forearifis and hind legs, well mixed 

 with brownish black on top of head and along back ; underparts dull white 

 owing to ]ilumbeous basal color of fur, except a small area on chin and 

 throat which is pure white ; nose dusky ; fore feet white ; hind feet irreg- 

 ularly clouded with dusky to toes, the toes white; tail faintly bicolor, 

 brownish black above, dull gray below, becoming brownish toward tip. 



CrauUd cliaracters. — Skull similar to that of X. ferruginen but smaller and 

 lighter, relatively longer and narrower ; rostrum more slender ; nasals 

 narrower and more attenuate posteriorly; dentition as in N. ferruginen but 

 lighter. 



Mensurements. — Type: Total length, 338; tail vertebrae, loO; hind foot, 35. 



Neotoma mexicana madrensis subsp. nov. 



7)lpe from Sierra INIadre, near Guadalupe y Calvo, Chihuahua, Mexico 

 (altitude, 7000 feet). Adult female, No. 95,244, U. S. National Museum, 

 Biological Survey Collection. August lifi, 1898. E. W. Nelson and E. A. 

 Goldman. Original number 12,918. 



(General charncter.'<. — Size smaller than N. mexicana ; color very different ; 

 tail long, slender and thinly haired ; ears rather large. 



Color. — Tyjje : Above pale cinnamon, i>urest along sides, strongly dark- 

 ened dorsally by black-tipped hairs; underparts dull white, the hairs 

 everywhere plumbeous basally ; axillae ochraceous buff; fore and hind 

 feet white ; tail distinctly bicolor, brownish above, whitish or grayish below. 



Cranial character.^. — Skull essentially as in N. mexicana, but smaller; 

 bulhe relatively smaller; first upper molar with antero-internal reentrant 

 angle deep as in iV. mexicana. 



Measurements.— Ty^e : Total length, 320; tail vertebrae, 150; hind 

 foot, 33. 



Neotoma micropus littoralis subsp. nov. 



Type from Alta Mira, Tamaulipas, Mexico (altitude, 100 feet). Adult 

 male. No. 92,952, U. S. National Museum, Biological Survey Collection. 

 April 10, 1898. E.A.Goldman. Original number 12,281. 



