. 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 . totipalmate is a special case of palmation, iuwhich aU four toes are webbed; this characterizes the whole orderSteganopodes (fig. 52). (&.) In the lohate foot, a paddle results not
. 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 . totipalmate is a special case of palmation, iuwhich aU four toes are webbed; this characterizes the whole orderSteganopodes (fig. 52). (&.) In the lohate foot, a paddle results notfrom connecting webs, but from a series of lobes or flaps along thesides of the individual toes; as in the coots, grebes, phalaropes, andsun-birds {Heliornithidce). Lobation is usually associated with semi-palmation, as is well seen in the grebes (Podicipedidee). In the snipe-like phalaropes (Phalaropodidai), lobation is present as a modificationof a foot otherwise quite cursorial. The most emphatic cases of loba-tion are those in which each joint of the toes has its own flap, with afree convex border; the membranes as a whole therefore present a scol-loped outline (figs. 53, 53 bis). Such lobes are merely a developmentof certain marginal fringes or processes exhibited by many non-lobate or non-palmate , if the foot of some of the gaUinules be examined in a fresh state, the toes will be seen to.
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbirdsnorthamerica
