' AVES. 3S9 



united and concealed in a tube, wliicli either forms a single aperture, or two 

 distinct orifices ; legs of medium size, but long in some species ; tibia about 

 half naked ; tarsus compressed ; three anterior toes entirely webbed and 

 long ; hallux represented by a pointed claw only j claws short, flat ; wings 

 long, first and second quills longest. 



Section I. — Petrels. — Bill robust, hooked, bulging towards the point ; 

 nostrils united in a tube, or furrow, on the surface of the bill ; tail conical 

 or somewhat rounded. 



Procelluria gladalis. — The Fulmar Petrel. Plate xlvii*. fig. 1. Described, 

 vol. iii. p. 382, &c. 



Section II. — Puffin Petrels. — Bill usually longer than the head, slender, 

 much compressed at the tip ; nostrils opening iu a double oritice near tlie 

 burface of the bill. 



Procellaria obscura Dusky Petrel. Plate xxxv. fig. 11- Described, vol. 



iii. p. 382, &c. 



Section III. — Swallow Petrels. — Bill greatly compressed and shorter than 

 the head ; nostrils in a single tube, with two orifices; tail square at point 

 or very slightly forked. 



Procellaria pelagica. — The Stormy Petrel. Plate xlvi. fig. 2. Describ. 

 ed, vol. iii. p. 382. 



Germs S.—VXCWiVTlhA..—IUiger. 



Generic Character. — Bill thick, robust, greatly depressed, very broad ; 

 upper mandible inflated on the sides ; interior margins furnished with car- 

 tilaginous plates ; ridge distinctly formed, compressed, and hooked at its 

 termination ; nostrils basal, having two orifices, situated in a short tube ; 

 three anterior toes, adhering by deeply divided membranes; hallux repre- 

 sented by a short claw. 



Pachyptila Vittata. — Forster's Pachyptila. Ash-gray above, white in the 

 under parts ; quiils, tail-feathers at the tip, and band on the wings when ex. 

 panded, brownish-black. Twelve inches long. Inhabits the Southern Hem- 

 isphere. 



Ge?iMs 9.— HALADROM A.— 7/Wg-er. 



Generic Character.— Bi\l short, straight, compressed, sharp at the edges, 

 ai;d furrowed longitudinally, hooked at the tip; lower mandible furnished 

 Willi a small pouch, capable of extension ; nostrils distinct, their base con- 

 cealed under a tube ; legs short , with ihree anterior toes only, which are 

 palmated ; wings short. 



Haladroma urinatrix. — The Diving Haladroma. Blackish-brown above ; 

 chin black, and white on the under parts. Eight and a quarter inches long. 

 Inhabits New Zealand. 



Genus 10.— DIOMEDEA.— iinnffluj. 



Generic C/iaracter.—Bill long, straight, robust, thick, sutured, laterally 

 compressed, abruptly curved at its point ; upper mandible channelled on the 

 side, and much bent at the point ; lower mandible truncated ; nostrils situ- 

 ated in the groove, tubulars, lateral, remote from the base, covered behind 



3£3 



