. Elements of comparative zoology. Zoology. 302 SYSTEMATIC ZOOLOGY. membrane have only external nostrils, but in all others they are placed at one side of a tube, which leads from the external nostril to the back part of the mouth. Hence a. 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 Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904