File:The structure and classification of birds (1898) (14747369781).jpg

Identifier: cu31924022531309 (find matches)
Title: The structure and classification of birds
Year: 1898 (1890s)
Authors: Beddard, Frank E. (Frank Evers), 1858-1925
Subjects: Birds Birds
Publisher: London, New York (etc.) Longmans, Green, and co.
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN

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The lacrymal has a descending process, which is swollen and nearly comes into contact with the ectethmoid. The maxillo-palatines are comparatively large and swollen bones; as in Cariama these bones are convex on the outer side, and not concave—as in Grus. There are no occipital foramina. It may be remarked that the holorhinal nostrils of this bird show no such approach to schizorhiny as is displayed by Chunga. From the anterior part of the maxillo-palatines, on a level with a point just in front of the commencement of the bony nostrils, a stoutish knob of bone ² projects inwards on either side. Of this there are traces in the cranes, particularly in Tetrapteryx. If these processes were to be increased in size and to meet a bony internasal septum, we ¹F. E. Beddard, On the Structure of Psophia,' &c., P. Z. S. 1890, p. 329. Duly referred to by Parker, Osteology of the Kagu, Tr. Z. S. vi. p. 507. 376 STRUCTURE AND CLASSIFICATION OF BIRDS should have the 'desmognathous' skull of the American vultures. Psophia has seventeen cervical vertebrae, of which the
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last bears a rudimentary rib. Five dorsal vertebrae are ankylosed, there being two free ones behind. The sternum GRUES 377 (fig. 184) is entire and unnotched; eight ribs articulate with it. The atlas is notched for the odontoid process. From the fourteenth cervical vertebra to the third dorsal there are blade-like median hypapophyses. In front of the fourteenth the catapophyses nearly enclose a canal; they get further apart and die away anteriorly. The following table shows the number and character of the hypapophyses in various Grues :— - Chunga Cariama Psophia Rhinochetus Grus Balearica Catapophyses Last on C11 C12 C13 C11 C15 C16 Hypapophyses C12-D1 C13-Dl C14-D3 C12-D3 C16-C19 C17-C19 The family Eurypygidae contains but one genus and species, Eurypyga helias, native of South America. It has an oil gland, which is generally nude but occasionally tufted, and twelve rectrices. Eurypyga, like Rhinochetus and Mesites, has powder-down patches, but their arrangement is very different from those of Rhinochetus.

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