PLATE IX. 
1. Acerotherium perimense, Pale, and Caut. Siwalik : restored view of cranium, from the 
specimen figured in plate I : the relations of the inferior squamosal processes, and 
the presence of two incisors are hypothetical. About one-sixth natural size. 
2. Rhinoceros platyriiinus, Falc. and Caut. Siwalik : restored view of cranium, from 
a cast of the specimen collected by Colonel Baker in the Siwaliks, and now in the 
British Museum : the union of the inferior squamosal processes is not clearly ex- 
hibited. About one-sixth natural size. 
3. Rhinoceros sumatrensis, Cuv. Recent : lateral view of cranium, copied from De 
Blainville’s “ Osteographies Rhinoceros, plate II : the non-union of the inferior 
squamosal processes is well shown. One-fifth natural size. 
