. Cave vertebrates of America; a study in degenerative evolution. Cave animals; Evolution. nli: ,9. ®fe. r/;.v m ..9 ^ MrsERBlelml del Eye of Stygicola. A. Left eye of Stygicola, 88 mm. long. From behind. X 390. B. Fragment ot pigment-layer, poor in pigment. From a neighboring section. C. Pigment-cell from choroid of same eye; few sections removed. D. f^ght eye of same fish, with same magnification. E. Left eye of Stygicola, No. 125 (mother of 125 a and i). 92 mm. long. From in front. X 390. Section obliquely through optic nerve. F. Left eye of Stygicola, 135 mm. long. From behind. In le

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. Cave vertebrates of America; a study in degenerative evolution. Cave animals; Evolution. nli: ,9. ®fe. r/;.v m ..9 ^ MrsERBlelml del Eye of Stygicola. A. Left eye of Stygicola, 88 mm. long. From behind. X 390. B. Fragment ot pigment-layer, poor in pigment. From a neighboring section. C. Pigment-cell from choroid of same eye; few sections removed. D. f^ght eye of same fish, with same magnification. E. Left eye of Stygicola, No. 125 (mother of 125 a and i). 92 mm. long. From in front. X 390. Section obliquely through optic nerve. F. Left eye of Stygicola, 135 mm. long. From behind. In left of figure outline of mass of pigment lying distad from eye is drawn. X 700. B Meisel 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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