EIGENMANN 



po.s 



i'/i. 



Eye of Typhlops lumbricalis. 



A. Horizontal section, from specimen 20 cm. long. A and B two-thirds objective, 



2 inch eyepiece. 



B. Transverse section, from specimen 2 1 cm. long. (Scales not shown.) 



C. Diagram of eye of adult. 



D. Diagram of eye of young. 



