. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. Todd-Carriker: Birds of Santa Marta Region, Colombia. 79 confined to the region Phaethornis longirostris susurrus, Attila par- virostris, and Phcugopcdiiis Icctus are perhaps the most isolated from their congeners, and when more is known of certain-other forms on. Fig. 4. Range of Pheugopedius Icctus (1), a species peculiar to the Santa Marta Region, and of its probable antecedent, F. rutilus (2). the list they may likewise prove to be actually as well as apparently isolated. (See Figures 4 a
. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. Todd-Carriker: Birds of Santa Marta Region, Colombia. 79 confined to the region Phaethornis longirostris susurrus, Attila par- virostris, and Phcugopcdiiis Icctus are perhaps the most isolated from their congeners, and when more is known of certain-other forms on. Fig. 4. Range of Pheugopedius Icctus (1), a species peculiar to the Santa Marta Region, and of its probable antecedent, F. rutilus (2). the list they may likewise prove to be actually as well as apparently isolated. (See Figures 4 and 5.) In nearly every case the derivation of these peculiar forms is evident, and will be considered more in detail beyond, under the head of the several species in question. While we are discussing the peculiarities of the Santa Marta Trop- ical Zdhe fauna it may be well to call attention to its lacuna, which are fully as marked as its positive characteristics. It is of course pos- sible that further intensive field-work will close some of these lacunae, but on the other hand it is not conceivable that the apparent ab- sence of so many genera and superspecific groups from the region is not without significance. Not to go beyond such forms as are known to have a comparatively extensive range in the Tropical Zone, occur- ring on both sides of the Santa Marta region, it is difficult to account for the apparent absence in the latter of any representative of the Columbine genus Zcnaida, of such well-known and widely distributed aquatic forms as Gallinula, Heliornis, Colymbus, Podilymbus, Ryu-. 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 Carnegie Museum; Carnegie Museum of Natural History. [Pittsburgh] : Published by authority of the Board of Trustees of the Carnegie Institute
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