Goldman Twelve New Wood Rats. ' 31 



maxillae relatively longer, reaching posteriorly nearly to interorbital con 

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



Measurements. Type: Total length, 348; tail vertebrae, 161 ; hind foot, 38. 



Neotoma ferruginea solitaria subsp. nov. 



Type from Nenton, Guatemala (altitude, 3500 feet). Adult male, No. 

 76,908, U. S. National Museum, Biological Survey Collection. December 

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



General characters. Similar in general to N. ferrginea, but smaller; fur 

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

 as in N. ferruginea. 



Color. Upperparts tawny ochraceous, brightest along sides, becoming 

 ochraceous buff on head, outer sides of forearms and hind legs, well mixed 

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

 owing to plumbeous 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. 



Cranial characters. Skull similar to that of N. ferruginea but smaller and 

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

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

 lighter. 



Measurements. Type : Total length, 338; tail vertebrae, 156; hind foot, 35. 



Neotoma mexicana madrensis subsp. nov. 



Type from Sierra Madre, near Gnadalupe y Calvo, Chihuahua, Mexico 

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

 Biological Survey Collection. August 26, 1898. E. W. Nelson and E. A. 

 Goldman. Original number 12,918. 



General characters. Size smaller than N. mexicana; color very different ; 

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



Color. Type : Above pale cinnamon, purest 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 characters/ -Skull essentially as in N. mexicana, but smaller ; 

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

 angle deep as in A 7 , mexicana 



Measurements. Type: 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. 



