\ Opposite page 244, vol. xviii.' 



Description of Specimens of Fossil Eeptilia discovered in the Coal- 

 measures of the South Joggin^s, Noya Scotia, hi/ Dr. J. W. Daw- 

 son, F.G.S., &c. By Professor Owei^, F.E.S., F.G.S. 



Appendix. — Dr. Dawson, of Montreal, on receiving the paper on 

 Fossil Eeptilia discovered at the South Joggins, printed in the 71st 

 Xumber of the Society's Quarterly Journal (August 1862), observed 

 that some of the specimens referred to in that paper must have been 

 displaced from their respective boxes before Professor Owen de- 

 scribed them, and that, therefore, he was misled by the labels on 

 some of the boxes as to the nature of their contents. Dr. Dawson 

 has therefore suggested some corrections for the paper in question, 

 which, with Professor Owen's sanction, are here enumerated. The 

 Professor accepts the interpretation of specific characters and distinc- 

 tions arrived at by Dr. Dawson through a study of the rich materials 

 which that gentleman has collected and worked out, in preference 

 to the opinion which Prof. Owen himself may have formed from the 

 selection of specimens submitted to him, and under the circumstances 

 in which they reached him. 



Page 238, line 11, for This specimen read The second specimen. 



,, 239, lines 1 and 2, dele which Dr. Dawson supposes to belong to another 



individual of Ht/Ionomus. 

 „ „ Hnes 19 to 36 inclusive, transpose to p. 238 above line 11, and under 



Box No. 1. &c. 

 J, ,, lines 32 to 35 inclusive, dele the sentence commencing The proportions, 



&c., and ending Hylonomus aciedentatus. 

 „ ,, Hne 35, dele In both species. 

 „ ,, line 37, for A second read The first. 

 ,, ,, line 46, for A third read A second. 

 ,, 240, line 6, for A fourth read A tliird. 



„ 241, line 8, add It was probably placed by mistake in this box. 

 „ „ after line 13, insert PI. IX. fig. 8 is the lower jaw of Hylonomus Wy- 



manni. Its teeth somewhat resemble those of H. Lyelli, but are fewer 



and more obtuse. As in all the species of Hylonomus, they are much 



longer toward the anterior end of the jaw. 



Page 244, Description op the Plates. 



PI. IX. Fig. 6, for aciedentatus read Lyelli, twice the natural size. 

 ,, Fig. 8, dele a young, or small kind of: after Hylonomus insert 



Wymanni. 

 „ Fig. 9, after Hylonomus insert aciedentatus. 

 PI. X. Fig. 3, after Hylonomus insert Lyelli. 



