. Catalogue of the fossil birds in the British Museum (Natural History). HALCTORNIS. 181 Family uxcektain. Genus HALCYORNIS, Owen '. Founded upon the evidence of the hinder portion of the cranium, which apparently agrees in general contour, and especially in the size and relations of the temporal grooves, "svith the LaridcB, the alleged absence of distinct supraorbital grooves seeming to be very doubtful. There is no evidence whatever to support the view that this genus is allied to the Alcedinida;; and if the undermentioned humerus be rightly referred the relationship to the LaridcE will
. Catalogue of the fossil birds in the British Museum (Natural History). HALCTORNIS. 181 Family uxcektain. Genus HALCYORNIS, Owen '. Founded upon the evidence of the hinder portion of the cranium, which apparently agrees in general contour, and especially in the size and relations of the temporal grooves, "svith the LaridcB, the alleged absence of distinct supraorbital grooves seeming to be very doubtful. There is no evidence whatever to support the view that this genus is allied to the Alcedinida;; and if the undermentioned humerus be rightly referred the relationship to the LaridcE will be evident. Haleyornis toliapicus (Konig"). Syn. Lams toliapicus, Konig^. The type and only described species. Somewhat smaller than Larits ridihundus. Hah. Europe (England). A. 130. The hinder portion of the cranium _; from the London Clay {Fiij.) (Lower Eocene) of the Isle of Sheppey. The t3-pe ; figured by Konig in his ' Icones Foss. Rectiles,' pi. xvi. fig. 193, and also by Owen in his ' British Fossil Mammals and Birds,' p. 554, fig. 23L The wide separation of the Fig. VHalcyornis ioliapicits (A) and Lams murinvs (B).—Palmar aspect of the distal extremity of the left humerus. \. a, ulnar condyle; b, radial ditto; c, supracondylar depression ; d, ectepicondylar process. temporal grooves on the occipital aspect at once distin- guishes this specimen from the skulls of the Alcedinidce; while the narrow interorbital bar is another feature in ' Brit. Foss. Mamm. & Birds, p. 554 (lS4fi). * Icones Fo&«. Sectiles, pi. ivi. fig. 193 (1825).—Lams. ' IjOc. 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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