Merriam — American Wood Rats, 123 



Museum, Department of Apjriculture Colleftion. Collected June 1, 1SS9, by 

 Vernon Bailey (Original number 114). 



Mcasuremenls (taken in liesh). — Tijpe : Total length 3.15; tail vertebne 

 151 ; hind foot 34. Ear from anterior base 22 (in dry skm). 



General characters. — Similar to N. mexh-ana ; audital biilliB 

 peculiar. 



Color. — Upper parts dull oclu'aeeous bufl", becoming gravLsii on tlie liead 

 and legs, and copiouslj" lined with blacli-tipped hairs on the back ; fore and 

 hind feet pure white ; under parts white ; under fur plumbeous ; a faint 

 ochraceous pectoral collar in type specimen ; tail bicolor, grayish brown 

 above, whitish beneath. 



C'ritn'ud characters. — Skull similar to that of niericana in size and general 

 characters; nasal bones broadly truncate posteriorly; audital bulla' rather 

 small and cm'ved toward median line anterioriy iii a manner not observed 

 elsewhere in the genus, the inner side decidedly concave, and sloping 

 inward. 



Neotoma baileyi sp. nov. 



7^'/y>(' from Valentine, Nehkaska. No. 5034 $ ad. Merriam Collection. 

 Collected June 16, 1888, by Vernon Bailey (Original number 41). 



Measurement^^ (taken in flesh). — Tijpe : Total lengtii 371 ; tail vertebne 

 1(55 ; hind foot 39. Ear from anterior base 23 (in dry skin). 



General eliaraetrrs. — Similar in a general way to Neotonia Jiori- 

 flana, but ears smaller, tail shorter, color grayer ; differs also in 

 cranial characters. 



Color. — Upper parts grizzled gray ; face nearly clear graj^ ; fore and hind 

 feet white ; tail sharply bicolor, dusky above, white below ; under parts 

 white to roots of hairs except on sides of belly where the basal fur is i)Unn- 

 beous and shows through. 



Cranial cliaractcrs. — Skull clearly of the Neotoma t1oriclaria-mieroj>us type, 

 having the frontal platform broad and tiat, and the postpalatal notch 

 broadly excavated, but differing from Jloridana, in the following characters : 

 Nasal and nasal branches of premaxilhe decidedly shorter ; ba.sisi)henoid 

 spine narrower and sloping from base to apex where it is continuous with 

 slope of presphenoid ; presphenoid without the enlarged base of Jloridana ; 

 palate nnich shorter ; incisive foramina decidedly shorter [length of palate 

 from incisive foramina equals length of incisive foramina ; in floridcma the 

 palate is much shorter than incisive foramina]. Molar teeth above and 

 below decidedly larger and heavier than in floridaiia ; m 1 with antero- 

 internal sulcus nearly obsolete, as in micropas. 



Neotoma fallax sp. nov. 



7'//7>f from Gold Hill, Boulder Co., Colorado. No. iilil cJ^ ad. Mer- 

 riam Collection. Collected November 1, 1889, by Denis Gale. 



Measurements of tij}>e (taken fi-om di-y skin) : Total length 330 ; tail verte- 

 brai 140 ; hind foot 31 ; ear from anterior base 22. 



