. Catalogue of the fossil birds in the British Museum (Natural History). -EGIALOENITHID^. 183 Geuus AGIALORIVIS, Lydekker (n. gon.). The humerus (fig. 41) is short and stout, with a long, prominent, and augulated delto-pectoral crest, a deep coraco-humeral groove, a large and flattened ectepicondylar process, a laterally compressed head, no tricipital fossa, and the surface for the brachialis anticus confused with the palmar depression. The ulna is longer than the humerus, and has a well-marked surface for the insertion of the brachialis anticus. The proximal phalangeal of the second digit of
. Catalogue of the fossil birds in the British Museum (Natural History). -EGIALOENITHID^. 183 Geuus AGIALORIVIS, Lydekker (n. gon.). The humerus (fig. 41) is short and stout, with a long, prominent, and augulated delto-pectoral crest, a deep coraco-humeral groove, a large and flattened ectepicondylar process, a laterally compressed head, no tricipital fossa, and the surface for the brachialis anticus confused with the palmar depression. The ulna is longer than the humerus, and has a well-marked surface for the insertion of the brachialis anticus. The proximal phalangeal of the second digit of the manus is indistinguishable from that of the Laridce. The anterior sternal angle of the coracoid is inflected, and there is a perforation at the base of the subclavicular process. The humerus indicates that the genus was exceedingly common at the period of the Phosphorites ; and the other bones are referred to the genus partly from these characters, and partly from the probability of their belonging to this common form. -Sgialornis gallicus, Lydekker (n. sp.). The type species. Length of humerus 0,026. Hub. Europe (France). The followhuj sjiecimeiis luere obtained from the Phosphorites of Bach, iiear Lalbenque (Lot), and were purchased in 1884. A. 60. Thirteen specimens of the humerus. The types; one of (Fig.) those of the right side being represented on an enlarged scale in the accompanying woodcut. In addition to the. J^t/ia/ornis gal/u-iis.—'Palmar aspect of the right humerus (A) and of the proximal phalangeal of the index digit of the left manus (B); from the Quercy Phosphorites. 5. Letters as in fig. 39, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). Department of Geology. [Birds]; Lydekker, Richard, 1848-1915. London
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