Vol. IV] GRINNELL AND SWARTH—SAN JACINTO GOPHERS 



159 



MEASUREMENTS IN MILLIMETERS OF NINE ADULTS OF 

 THOMOMYS ALTIVALLIS 



MEASUREMENTS IN MILLIMETERS OF NINE ADULTS OF 

 THOMOMYS JACINTBUS 



(1) Measured over-all from anterior tips of nasals to most posterior 

 points on occipital end of cranium, which are usually the condyles. 



(2) Greatest breadth behind zygomatic arches; sometimes pertains 

 to auditory tubes, sometimes the lateral protuberances of mastoids; often 

 the parallel dividers touch both. 



