528 A. L. ADAMS ON VERTEBRATA OF THE 
SaquaLIpz *, 
The Sharks’ remains are the most varied and numerous of all the 
vertebrates of the Maltese Miocene. Their teeth have found their 
way into almost every public collection in Europe, and continue to 
furnish employment to persons who make it their business to dis- 
pose of them to travellers. With the exception of the Upper Lime- 
stone, they have been found in all the beds. From a large expe- 
rience in collecting and determining the Maltese species, I have 
been enabled to furnish the following Table of their stratigraphical 
distribution. 
| 
Upper | gind. | Mart, | Calcareous| Lower 
Limestone. ; ar": | Sandstone. | Limestone. 
Carcharodon megalodon. * * * x 
Carcharias productus . * % x * 
Oxyrhina xiphodon ...... % Mise * 
Inastilis))jscceseces see. x* SBE % 
Mantel yeti osesce * 
Hemipristis serra ......... * % 
paucidens ............ * * 
Corax aduncus ............ abe * 
Odontaspis Hopei? ...... aes “et * * 
Lamna elegans ............ aes 580 500 * 
So far as I know, none of these Squalidee has been discovered in the 
upper and middle portions of the Upper Limestone. They suddenly 
appear, however, at the point of junction between the Red Limestone 
and the Sand bed, where they are plentiful, especially Carcharo- 
don megalodon, some of the largest specimens of the teeth of which 
have been discovered here. The Maltese historian, Boisgelin, refers 
to one as much as 7 inches on its largest side +; and I have referred 
to a tooth from the black sand 6°3 inches in length}. It is in this 
bed, and the Calcareous Sandstone, more especially in the upper 
“nodule seams,” that they abound, and in the latter associated with 
Mollusca and Echinodermata. 
I have rarely found teeth in the Lower Limestone, and these 
only of the two species recorded above. 
As regards numbers, they are met with in the order given, the 
two rarest being Odontaspis Hoper (which, however, I haye not seen 
with its dentils), and Lamna elegans. 
NorrmpANUS PRIMIGENIUS ? 
A tooth resembling that of this species is figured by Scilla § ; 
* Nearly all the Maltese Sharks were long since determined, more or less 
exactly, by Sir Philip Grey Egerton, Proc. Geol. Soc. vol. iv. p. 230. 
+ Boisgelin’s ‘ Malta,’ p. 33. t Op. cit. p. 139. 
§ Vana Speculazione, plate 2. 
