Tertiary. ] PALZONTOLOGY OF VICTORIA. [Mammalia, 
This is by far the most abundant of all the Victorian Cefotolites, 
there being fourteen specimens in the Museum, collected by the 
Rev. Mr. Legge, the Rev. Mr. Price, and Mr. Nelson, a young and 
promising geologist, who has put his residence near the quarries at 
Waurn Ponds to excellent use by preserving the more important 
fossils, with many of which he has enriched the public collection. 
Ihave great pleasure in dedicating this species to Mr. Nelson, and 
hope he may add still further to our knowledge of the Tertiary 
remains of Whales from the Geelong strata. 
This is so totally unlike the two previously described species 
that there is no difficulty in identifying it by the flattened wedge- 
like anterior truncation, by the smaller and more rugged or 
plicated inner involute part, and by the very deep bilobation of the 
hinder end. This latter character is so pronounced that I dare say 
it would be found to be generically distinct from the two previously 
described, and much more nearly allied to the Ziphioid Whales. 
As these latter Cetaceans have a long solid beak of dense flattened 
bones, I fancy that the numerous Cetacean bones of this character 
found in the Waurn Ponds quarries may be found to have belonged 
to a form of this group, and possibly the present species of Ceto- 
tolites may be the ear-bone of the same. 
Not uncommon in the Miocene Tertiary strata of Waurn Ponds, 
Geelong. 
EXPLANATION OF FIGURES. 
Plate LIV.—Fig. 3, average specimen, natural size, viewed from above. Fig. 3a, same 
specimen viewed from below, showing the posterior bilobation. Fig. 3b, same specimen viewed 
from behind. Fig. 4, another specimen (var. Rugosa), viewed from above, natural size, showing 
the rugged shallow anterior part of cavity near the flattened wedge-shaped anterior truncation, 
Fig. 4a, same specimen viewed from below. Fig. 5, another specimen viewed from behind. 
Freperick McCoy. 
DEC, VI. [ 17 J Cc 
