C 39S 3 



Genus XC. PETREL. 



* True, with the Noftrils contained in a Tube. 



N° 



i. 



2. 



3- 



4- 



5- 

 6. 



7- 



Giant P. 

 Brafilian P. 

 Black P. 

 Var. A. 

 Grey P. 

 Glacial P. 

 White-breafted P. 

 Antarctic P. 

 Pintado P. 

 Var. A. 

 Fulmar P. 

 Var. A. 



N° io. Cinereous P. 

 ii. Shearwater P. 



Var. A. 

 i2. Black-toed P, 



13. Snowy P. 



14. Brown-banded P. 



15. Sooty P. 



16. Fork-tail P. 



17. Frigate P. 



18. Stormy P. 

 Var. A. 



19. Diving P. 



* * Spurious, with the Noftrils diftincT. 



20. Broad-billed P. 22. Pacific P. 



21. Blue P. 23. Dufky P. 



THE bill in this genus is ftrait, but bent at the end. 

 Noftrils for the moft part contained in one tube j in a few 

 fpecies diftincT: and feparate. 



Legs naked a little above the knees. 



Three toes placed forwards, and a fpur behind inftead of a 

 back toe *. 



* The 19th fpecies excepted, in which this Iaft character is wanting. 



3 E 2 Quebran- 



