^49 



PACHYPTILA. PRION. 



Generic Character. 



Rostrum mediocre, latum, 

 rectum, depressum, apice 

 uncinato; mandibulae apice 

 truncatag, marginibus sub- 

 denticulatis. 



Nares ad basin rostri positae, 

 tubulosae, distinctae. 



Pedes breves, tridactyli ; un- 

 guis posticus loco pollice. 



Beak moderate, broad, 

 straight, depressed, its tip 

 uncinated ; both mandi- 

 bles truncated at the tip, 

 their margins slightly den- 

 ticulated. 



Nostrils distinct, tubulous, 

 placed at the base of the 

 beak. 



Legs short, three-toed; a 

 claw alone in place of the 

 hinder toe. 



PACHYPTILA. Illig. 

 PROCELLARIA. Gmel., Lath. 



The Prions were judiciously separated from the 

 rest of the Petrels by Illiger, in his Prodromus Ma- 

 nualiorum et Avium, &c. ; and the most fastidious 

 genus haters are disposed to allow them a name of 

 distinction, notwithstanding the additional burthen to 

 the memory (according to their ideas) in consequence 

 of having a new name added to the catalogue. Now, 

 as some notion may be formed of the length to which 



