. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds. Birds; Birds; 1887. Fig. 94. Figs. 90-95. — Diagrams of carotid arteries of birds: A, root of aorta; a, arch of aorta, to tlie riglit side ; it, left Innominate; W, right innominate
. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds. Birds; Birds; 1887. Fig. 94. Figs. 90-95. — Diagrams of carotid arteries of birds: A, root of aorta; a, arch of aorta, to tlie riglit side ; it, left Innominate; W, right innominate; ?s, left subclavian; ', right subclavian; /c, left carotid; re, right carotid. (1) Fig, 90. Aves hicarotidina ntyrmales, with two carotids, both alike. (2) Fig. 91. Aves lwvo-carotidi7imy with left carotid only. (3) Fig. 92. Aves bicarotUJinfc abnormales, certain luirrots, with two carotidB, not alike. (4, D, 6) Aves conjuncto-caroiidlnw, with two carotids, which speedily unite in one. {4) Fig. 9;}, bittern, both alike. (5) Fig. 94, flamingo, left very small. (6) Fig. 95. cockatoo, right very small. (Copied by Sbufeldt from Garrod.) numerical proportion of Passerine genera makes (2) the most frequent arrangement. There is but one carotid in all Passeres as far as known; in most Gypselidcc.; in Trogonidm, Meropidir, TTpupidm, Bhamphastidte, some Psittaci, the Turnicidte, Megapodidm, Podidpedida, Alcidtc, Rheida:, Apterygida'. Thus in Passeres, Golumba:, Accipitres, Gralla;, and Aiiseres, the carotiil arrangement is an ordinal cliaracter, all but the first named of these great groups having two. The character separates most of the families of " Picarian" birds, and also tinguishes the families Phmnicoi^teridce, Megapodida:, Cracidm, Turnicida:, Podieipcdid(C, and family groups of the Ratita, from among one another. It is apparently only a generic charac- ter in Psittaci, and in Cypselidm, Ardeidm and Alcida;. Reaching the skull, the carotids burrow in the b
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbirds, bookyear1887
