CO BIRDS. PASSERES. Hirundo. 



/. Commissure of the bill straight. 

 ff. Bill angular, slender, pointed. 



Sitta. 

 gg. Bill strong and rounded. 



h. Bill more or less inflated at the base. 

 Pyrrhula. 

 Coccothraustes. 

 Pyrgita. 



hh. Bill exactly conical 

 Fringilla. 



ff. Commissure of the bill interrupted. 

 Sturuus. 



bb. Ridge of the upper mandible obviously curved. — Nostrils cover- 

 ed with defluted feathers. 



c. Feathers of the front loose, and capable of being erected into 

 a crest. 

 Garrulus. 



cc. Front feathers plain. 



d. Tail produced. 



Pica, 

 del. Tail of ordinary size. 

 Corvus. 



1. Bill slender, produced. Tenuihosthes. 

 a. Claws long and hooked, for climbing trees. 



Certhia. 

 aa. Claws of ordinary dimensions. 

 Pyrrhocorax. 

 Upupa. 



II. First and second toes adhering nearly to their extremity. 

 Alcedo. 



Gen. XIX. HIRUNDO. Swallow.— The first quill the 

 longest. Tail forked, of twelve feathers. Nostrils partly 

 closed by a membrane, and covered with feathers. One 

 of the toes behind. All the species are common summer 

 visitants. 



35. H. rustica. The Swallow. — Front and chin chesnut- 

 red. 



H. domestica, Will. Orn. 155. Sill. Scot. 17 — H. rus. Linn. Syst. i. 343. 

 White, Phil. Trans. 1775. 258 — Chimney-Swallow, Perm. Brit. Zool. i. 

 398 — Temm. Orn. i. 427 — W, Gwennol, Gwenfol; G, Gobhlan- 

 gaoith. 



Length 7, breadth 12 inches ; weight 1 ounce. Bill black, hides hazel, 

 tongue and palate yellowish. Legs and feet dusk}', Forehead and chin 

 chesnut-red. Plumage, above, black, with a gloss of purple ; beneath, with 

 the breast black, the rest dusky white. Two middle tail-feathers plain, the 

 rest marked on the inner webs, near the ends, with an oval white spot. In 

 the female, the tail-feathers are much shorter, there is less red on the front, 

 and nyxre white beneath. The nest is in chimneys, or in out-houses, upon or 



