SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 61, NO. 1. PL. 31 



FIG. 1.— CERATOTHERIUM SIMUM SIMUM ; FEMALE, AGED 

 FIGS. 2 & 3.— CERATOTHERIUM SIMUM COTTON I ; FEMALE, ADULT 

 FIGS. 4 & 5— CERATOTHERIUM SIMUM COTTONI ; MALE, ADULT 

 SHOWING SEXUAL DIFFERENCES IN SIZE OF BASE OF FRONTAL HORN 



