254 Miller — A Neiv Jumping- Mouse from Nor Mexico. 



22.(1) ;* basilar length, 16.6 and 16.4 ( 18.0 and 18.0); zygomatic breadth, 

 11.2 and 11.2 (12.2 and 12.6); breadth of braincase, 10.0 and 9.8 (10.8? 

 and 10.4) ; depth of braincase at middle, 7.6 and 7.4 (8.0 and 7.8) ; nasal, 

 9.6and 9.2(9.6and 9.2); diastema, 5.2 and 5.2 (6.0 and 6.0); mandible, 

 12.2 and 12.2 (13.0 and 13.0); maxillary toothrow, 3.8 and 3.8 (4.0 and 

 4.0); mandibular toothrow, 3.4 and 3.6 (3.8 and 3.S). 



Specimens examined. — Seven, from the following localities in New 

 Mexico: Cloudcroft, Otero County, 3; Espahola, Santa Fe County, 3; 

 Fort Burgwyn, near Taos, Taos County, 1. 



* Measurements in parenthesis an' those of an adult female and male (both with 

 moderately worn teeth) Z. trinotatus allehi from Donner, California (Nos. 100,469 and 

 100,244). 



