448 University of California Publications ii 



XVIII. Measurements and Ratios of Scaled Pc 

 All measurements in millimeters, and taken in dry sk 



Museum 

 Subspecies — number 



Castor s. subauratus 16385 



Castor s. subauratus 16382 



Castor s. subauratus 16383 



Castor s. subauratus 8988 



but not from frondator, though absolute meas 

 tus exceed those in the latter. 



In subauratus the extension of the nasals 

 connecting the points of the antorbital proces 

 pacificus, but less than in frondator (actual 

 auratus, no. 16383, 1.0 mm.; 8988, 0.8. In 



