ON BONES AND TEETH OF EXTINCT LIZARD. 25 
“The Midland Medical Miscellany,” Vol. IV., No. 38, 1885. 
From the Editor, Leicester. 
The following papers were read :— 
ON BONES AND TEETH OF A LARGE 
EXTINCT LIZARD. 
BY 
Go We pe VaB sr Mis 
(Puates I.-III.) 
Sir Ricnarp Owen has lately (Phil. Trans., pt. 1, 1884) 
ce 
adduced evidence, derived from “ pleistocene” deposits, of the 
former existence in Australia of a large pleuredont lizard. Ina 
fragment of a jaw with roots of teeth, submitted to him by the 
Department of Mines, New South Wales, there were found 
reasons for concluding that it had belonged, not to a crocodile 
as at first surmised, but to a lizard allied to Hydrosaurus, but 
more than twice its size. To the reptile represented by this 
interesting relic the name Notiosaurus dentatus was assigned 
by the veteran anatomist, and, in our conceptions of the later 
bygone scenes of Australian land-lfe, it pairs off remarkably 
well with the huge Megalania made known to us by the same 
author. Under a misapprehension of the stratigraphical horizon 
of Notiosaurus, arising from the fact that it was merely 
stated to be ‘ pleistocene,’’ the writer was induced to believe 
that the lacertilian remains to which his subsequent observations 
refer were of an age anterior to that of the New South 
Wales specimen and to propose for them a distinctive name. 
On reference, however, to Sir R. Owen’s original memoir 
it appears that the jaw described by him was drawn from 
