. Cave vertebrates of America; a study in degenerative evolution. Cave animals; Heteropygii. Chologaster agassizii. Dorsal, side, and ventral Troglichthys rosae. (a) dorsal; (b) side ; (c) venhal views. Typhlichthys subterraneus. (J) side and (e) dorsal 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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