212 



Zoological Society : — 



3 feet 7 inches ; of the rostrum, from tip to the notch, 2 feet G inches ; 

 the width at the widest part of the brain-case 1 foot 6 inches ; the 

 length in a straight line, from the tip of the rostrum to the crest 

 over the blower, 2 feet 1 1 inches ; the height of the skull, from the 

 hinder part of the palate to the crest over the blower, 1 foot 2 inches. 



The entire length of the lower jaw 3 feet ; the length from the con- 

 dyle to the hinder edge of the base of the tooth, 1 foot 1 \\ inches ; 

 the length of the exposed part of the tooth along the anterior edge, 

 9g inches; the width below the teeth of the side of the lower jaw, 

 measured from the inner part of their base, 3 inches. 



There is a partial hollow, as if it were the cavity of an old tooth 

 that had fallen out, on the margin of the inner jaw, behind the base 

 of the elongated arched tooth. 



" In your letter you sent me a sketch of the skull of Ziphius in- 

 dicus with two teeth in the front of the lower jaw, and a short 

 stumpy head, totally unlike the skull of Ziphius figured in the ' Ca- 

 talogue of Cetacea.' " 



" There is a skull in the South African Museum which I have got 

 down as a Globiocephalus. It is the skull of a very old animal, 

 without teeth ; but 1 think I can trace that it has had two front 

 teeth in the lower jaw, if not also along (the edge of) the upper and 

 lower jaw. The animal was taken on our coast." 



The figures of the skull which accompany this note appear to 

 me to represent the skull of a species of Hyperoodon, which differs 

 from Hyperoodon of Europe in having only a low crest on each side 

 of the maxillary bones. I would propose to designate the species 

 Hyperoodon capensis. 



Skull and lower jaw of Hyperoodon capensis. 



The length of the skull, from the end of the rostrum to the occi- 

 pital condyle, is 3 feet ; the height of the skull, from the crest of 

 the blower to the condyle, 2 feet ; the greatest width of the brain- 

 case 1 foot 7 inches. 



