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ON A DENTAL PECULIARITY OF THE LEPIDOSTEIDE. 207 
Discusston,. 
Mr. MacDonyett ei if the paper was written upon a fish 
Maat the writer had not seen 
FEssoR Liv ee said Mr. Barkas had not seen the 
geticnlas specimen referred to; but he had devoted a consider- 
able amount of attention to the subject of fossil fishes, and from 
the descriptions given of it, Mr. Barkas was inclined to think 
that it ee been put in the wrong class. Mr. Barkas’s views were, 
co open to discussion, and the discussion of systems o of 
Gisdilfention did good. 
« [Mr. MacDonnell has evidently quite mistaken the drift of this 
paper. In writing it my object was to point out that the rgker é 
of the genera in the family Lepidosteid, the teeth of whic 
were known, had the teeth tipped in a peculiar manner with 
enamel, which fact consequently led me to the inference that all 
the other supposed genera and species of that family that had 
_ Their Nahicfieation®s is, therefore, uncertain, and future discoveries 
may enable us to decide as to the nature of their teeth. | 
