. Cave vertebrates of America; a study in degenerative evolution. Cave animals; Heteropygii. EIGENMANN. Rhineura floridana. A. Side and dorsal views of tail. B. Horizontal section of head, showing Harder's gland and position of eye. C. Horizontal section through right eye, showing solid strand of cells, extending from Harder's gland to near epidermis. D. Horizontal section of left eye, showing extent of pigmentation and lens. E. Distal part of another section of same eye, showing different layers of retina at their highest development. 2 mm. objective. F. Proximal part of another eye, showing
. Cave vertebrates of America; a study in degenerative evolution. Cave animals; Heteropygii. EIGENMANN. Rhineura floridana. A. Side and dorsal views of tail. B. Horizontal section of head, showing Harder's gland and position of eye. C. Horizontal section through right eye, showing solid strand of cells, extending from Harder's gland to near epidermis. D. Horizontal section of left eye, showing extent of pigmentation and lens. E. Distal part of another section of same eye, showing different layers of retina at their highest development. 2 mm. objective. F. Proximal part of another eye, showing cyst represented diagrammatically in text- fig. 19c. 2 mm. 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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