. 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. 170 GENERAL ORNITHOLOGY. the gist of drorruBognathism; it is exhibited in several ways, (a) In Struthio alone, fig. 75, the very short vomer, home upon the rostrum, ar
. 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. 170 GENERAL ORNITHOLOGY. the gist of drorruBognathism; it is exhibited in several ways, (a) In Struthio alone, fig. 75, the very short vomer, home upon the rostrum, articulates neither with palatines nor with ptery- goids, but with the maxiUo-palatines ; and the palatines, which are remote from the rostrum, advance beyond the maxiUo-palatines, as in most birds. (6) In Rhea, the vomer is as long as usual in birds, and'articulates behind with the palatines and pterygoids, but does not join the maxillo-palatuies in front; the short palatines unite with the inner and posterior edges of the thin fenestrated maxiUo-palatines. (c) In Casuarms and Dronusus (cassowary and emeu), the long vomer articulates behind with the palatines and pterygoids, and unites in front with the maxillo-palatines; these are flat, imperforate, and solidly joined to the premaxiUae; the palatines are short, (d) The extinct Dinorttis had flat imperforate maxiUo-palatine plates uniting sohdly with the premaxUlae, and probabty with the vomer, as in Dronueus. (e) In Apteryx, the long vomer unites with palatines and pterygoids behind; short broad palatines J'mx-. suture obUquely with flat imper- forate maxillo- palatine plates, which unite both with premax- iUary and vomer. (/) The tin- amons, DromcBognatheB (fig. 76) " have a completely struthious palate"; vomer very broad, uniting in front with broad max- iUo-palatine plates as in Sro- nuBus; behind articulating with posterior ends of palatines and anterior ends of pterygoids, both of which are thus prevented, as in
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1894
