249 



PACHYPTILA. PRION. 



Generic Character. 



Rostrum mediocre, latum, 

 rectum, depressum, apice 

 uncinato; mandibular apice 

 truncatse, 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. 



short, three-toed ; a 

 claw alone in place of the 

 hinder toe. 



Legs 



PACHYPTILA. Illig. 

 PROCELLARIA. Gmel., Lath. 



JL HE 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 



