| OCR Text |
Show 162 MR. F. E. B E D D A R D O N T H E [June 16, are more or less incomplete, intervene between that bearing the pessulus and that upon which the intrinsic muscles of the syrinx are inserted. The same is the case with the syrinx of Dryotriorchis; but the tracheal rings immediately preceding that to which the intrinsic muscles are attached lie well below the pessulus, are joined internally by the membrana tympaniformis interna, and clearly constitute a portion of the bronchi. It will be recollected that in other groups of birds*, some of the members of which possess the bronchial form of syrinx, the first semirings or rings of the bronchi are tracheal in character, and differ from the ensuing semirings which belong to the bronchi proper. In fact it appears as if the bronchi in the bronchial syrinx were partly formed by a split trachea, and partly by semirings belonging to the bronchi proper. The tongue in the Accipitres shows characters which allow of the division of the group into a Falconine and an Aquiline series. Text-fig. 19. Text-fig. 20. Text-fig. 19.-Tongue of Milvago chimango, dorsal aspect. X 2. Text-fig. 20.-Tongue of Gypohierax angolensis, dorsal aspect. X \\ :" In several species of Fcdco, in Tinnunculus alaudarius, Hiera-ciclea berigora, and Milvago chimango (text-fig. 19), the back part of * Owls, Cuckoos, and Goatsuckers. |
