. Cave vertebrates of America; a study in degenerative evolution. Cave animals; Heteropygii. r. *% #. 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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Keywords: ., bookauthoreigenmanncarlh1863192, bookcentury1900, bookdecade1900