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. 1 9c. 2 mm. objective. 



