PLATE 1. 



CESTRACIONTIDAE. 



Fig. 1-3. Cestracion zygaena (Pago 157). Fig. 4-6. Cestracion tibdro (Page 160). 



1. Lateral view of a sporinion 27^ inches long. 



2. Head from below. 



3. Teeth from the side of the jaw. 



4. Lateral view of a specimen 211 inches long. 



5. Head from below. 



6. Teeth from the side of the jaw. 



