. Cave vertebrates of America; a study in degenerative evolution. Cave animals; Heteropygii. Root breaking up into rootlets in Ashton Cave. Young of Lucifuga are found among these Cave Isabella, showing group of roots coming through crack in roof. Taken with artificial 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 Eigenmann, Carl H. , 1863-1927. Washington, D. C. , Carnegie Institution of Washington

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