Wituiams, — Eye of Flounder. 
Fig. 13. , 
Fig. 14. 
Fig. 15. 
Fig. 16. 
Fig. 17. 
PLATE 3. 
Bothus. Anterior face of a cross-section through the nasal pits of a fish 
in Stage IV. xX 40. 
Bothus. Dorsal aspect of a frontal section through a fish of Stage II. 
x 100. 
Pseudopleuronectes. Supraorbital bar cut in frontal section showing signs 
of resorption. X 760. 
Bothus. Anterior face of a cross-section from the same individual as in 
Fig. 13. x 40. 
Pseudopleuronectes. Anterior face of a cross-section of the head of a fish 
in Stage I. X 200. 
