188. Oedicxemus. Both mandibles swollen at the 

 extremity. Cha7'adr'ms cvdicnemus. 



Bill wedge-shaped at tjie end. 



189- H.EMATOPUs. Oyster-catcher. H. osiralcgu.s. 



(2.) Bill vaulted. 



190. Otis. Bustard. Bill slightly arched. Wings 

 short. O. tarda. 



B. Wings imperfect. The birds of this group usually 

 termed Struihioncs, are incapable of flying. The breast- 

 bone is destitute of the mesial crest, and the pectoral mus- 

 cles are weak. The muscles of the thighs, on the other 

 hand, are uncommonly large, enabling these birds to run 

 with astonishing swiftness. They have no hind toe. 



a. Feet with three toes. All the toes with nails. 



Head with a horny protuberance. 



191- Casoaris (Bontius). Cassaw.-jry or Emu. Bill 

 compressed. Neck with caruncles. Wings, with stiff web- 

 legs feathers. Nail of the inner toe largest. Phalanges of 

 the toes 3, 4, 5. Feathers wry. StrutMo Casuarius of 

 Lin. 



Head with a horny protuberance. 



192. RuEA, fBrisson). Nandou. A callous knob, in 

 place of a hind toe. Wings capable of aiding the animal 

 in running. Feathers of the rump produced. Phalanges 

 of the toes, 3, 4, 5. StrutMo Rhea of Lin. American 

 Ostrich. Cijv. Beg. An. iv. t, 4. fig. 5. 



193. Tachea *. Shanks serrate behind. Wings mi- 

 nute. Casuarius Novoj Holland'ife of Latham, or New 

 Holland Cassawary. 



* Txx,vi celer. 



VOL. If. K 



