. [Collected reprints, 1911-1931. Ornithology; Mammals. 1926] Swarth: Birds amd Mammals from the Atlin Region 79 would place as subspecies, D. /. fuliginosus, D. f. sitkensis, D. f. sierras, and D. f. howardl The differences between the oiscurus and fidi- ffinosus aggregations are trenchant ones and I have seen no doubt- ful specimens, no " intergrades," from regions where the two come closest together. There are various statements in literature affirming the existence of intergradation between oiscurus and fuliginosus, but these are all assertions of the most casual nature, with no
. [Collected reprints, 1911-1931. Ornithology; Mammals. 1926] Swarth: Birds amd Mammals from the Atlin Region 79 would place as subspecies, D. /. fuliginosus, D. f. sitkensis, D. f. sierras, and D. f. howardl The differences between the oiscurus and fidi- ffinosus aggregations are trenchant ones and I have seen no doubt- ful specimens, no " intergrades," from regions where the two come closest together. There are various statements in literature affirming the existence of intergradation between oiscurus and fuliginosus, but these are all assertions of the most casual nature, with no detailed information accompanying 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 Swarth, Harry Schelwald, 1878-. s. l. , s. n.
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Keywords: ., bookcentury1900, bookpublisherslsn, booksubje, booksubjectmammals
