ON THE SYSTEMATIC POSITION OF ZEUGLODON. 3 
In the imperfect skull figured by Jonannes Miuier (PI. 1), and of which 
a sketch is here reproduced, we remark the following characters. The large, 
Fig. 1. Sxutn or ZEuGLODON. 
(After JoHANNES MULLER.) 
broad nasal bones, and the narrow, pinched parietal region are absolutely different 
from anything to be seen among the Cetacea. Nothing overlaps; the parietal is 
wholly in front of the occipital, the frontal of the parietal. Nothing, as it seems to 
me, save perhaps the lateral expansion of the frontals, could suggest the idea of a 
resemblance to the Cetacea. But on the contrary, the resemblance to certain of the 
Pinnipedia is really striking. If one compare the skull of Zeuglodon with that of . 
an Arctocephalus or an Otaria, one can show to demonstration how, line for line, the 
narrow parietal region, the parietal and occipital crests, the vertical occiput, even 
the configuration of the fronto-nasal sutures all agree in these several skulls. The 
lateral frontal expansions appear to me to be nothing more than an exaggeration of 
- apophyses, which, absent in the Common Seal, attain a great development in, for 
example, the Otarias. 
Examining the skull on its posterior face the triangular outline of the occipital 
Fig. 2. Occterran Recion or ZEUGLODON. 
(After J. MULLER.) 
agrees precisely with that of the Eared Seals. The occipital condyles are small, 
prominent, vertical, lateral, and widely separate from one another below, as in 
