66 ON THE GENUS SQUALUS OF LINNE. 



I cannot conclude without observing, that the 

 terms atlantal and sacral, are applied to the an- 

 terior and posterior dorsal fins ; although, in this 

 instance, the terms anterior and posterior would 

 have applied equally well, yet, on other occasions 

 they would be subject to much objection ; for the 

 sake of uniformity, therefore, they are used here al- 

 so. I am happy in being enabled to state, that the 

 anatomical nomenclature of Dr Barclay is adopted 

 by several of the most eminent zoologists in this 

 country, who in future will introduce them into 

 their descriptions, thereby avoiding that ambigui- 

 ty of language which has rendered nearly use- 

 less the valuable works of several older writers. 



Since the above was given to the Society, I 

 have been favoured by my worthy friend the Rev- 

 John Fleming, with the jaws of Squalu^ Selanonm 

 taken in Zetland, which agrees with that in the 

 Museum of the College' 



