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Show 244 DR. H. G A D O W O N THE [Mar. 15, Furcula with hypocleidium. Plagioccelous, type V. Caeca large. Crop globular. 10 primaries. I. TURNICES. 14 or 15 cervical vertebrae. Schizorhinal. Sternum with long and simple posterior lateral processes. Procoracoid process large. No spina externa sterni. Coracoids separate. Hypotarsus complex. Hallux very small or absent. Flexors of type IV. Neck with lateral apteria. Oil-gland tufted. Quinto-cubital. II. GALLI. 16 or more cervical vertebrae. Holorhinal. Coracoids touching each other. Flexors of type 1. Hallux large. Neck without lateral apteria. 1. Gallidce. 16 cervical vertebrae. Nidifugous. Spina communis sterni. Sternum with long posterior lateral processes and with oblique processes. Hypotarsus complex. 2. Opisthocomidce. 18 or 19 cervical vertebrae. Nidicolous. Spina externa only present. Sternum with small notches or fenestra only ; no oblique process. Oil-gland tufted. 15. GRUIFORMES1. Cosmopolitan. Aquatic or paludic. Angulare mandibulae truncated. Rhamphotheca simple. 1 Owing to the existence of such peculiarly specialized forms as Eurypyga, Bhinochetus, Podica, Dicholophus, and Otis (all of which are most intimately related to the bulk of the Grues and Ralli), it is not possible to admit some important characters into the diagnosis of the Gruiformes. They all are absolutely nidifugous with the exception of Eurypyga and Heliornis (the young of Bhinochetus are unknown). They are typically schizognathous, except Bhinochetus and Dicholophus. They have a tufted oil-gland except Bhinochetus, Eurypyga, Dicholophus, and Otis. They have lateral cervical apteria except Eurypyga, Dicholophus, and Otis. Their feet are those of Waders, except the tridactyle cursorial Otis. Bhinochetus alone has impervious nares. |