THE 



CANADIAN 



NATURALIST AND GEOLOGIST. 



Vol. VIII. JUNE, 1863. No. 3. 



Art. XIII. — The Air-Breathers of the Coal Period in Nova 

 Scotia ; by J. W. Dawson, LL.D., F.R.S., &c. 



(Continued from page 92.) 



V. Dendrerpeton Oweni. 

 Plate IV. 



Among the reptilian remains found in erect trees at the South 

 Joggins, there have occurred several portions of skeletons, which 

 from their sculptured cranial bones, plicated teeth, and the forms 

 of their scales and limb-bones, I have referred to the genus Den- 

 drerpeton, but to individuals of much smaller size than the full- 

 grown specimens of D. Acadianum. It did not occur to me to 

 suppose that these were specifically distinct from the larger indi- 

 viduals, until I observed that bones of this kind, contained in the 

 collections sent by me to the Geological Society, or represented 

 in the figures drawn to illustrate one of my papers, were referred 

 by Professor Owen, in his notes on these specimens and fio-ures, 

 in the Journal of the Geological Society, to the genus Hylonomus ; 

 which is quite distinct from Dendrerpeton, as will be explained in 

 the sequel. 



I was thus induced to re-examine all the specimens in my col- 

 lection, and the result has been to establish a strong probability 

 that there is in reality a second species of Dendrerpeton, smaller 

 than D. Acadianum, and differing from it in several points. This 

 species I propose to name D. Oweni. It differs from D. Acadia- 

 num in the following particulars : — (1) Its much smaller size : 

 (2) Its long and hooked teeth ; PI. IV, Figs. 2 to 8 ; (it will be 

 Can. Nat. 11 y i. yin 



