The Grayling and the Smelt 137 



related to the Dercetida is the American family of Stratodontida 

 with its two genera, Stradodus and Empo from the Cretaceous 



FIG. 98. Eurypholis freyeri Heckel. Family Enchodontidas. Cretaceous. 

 (After Heckel; the restoration of the jaws incorrect.) 



(Niobrara) deposits of Kansas. Empo nepaholica is one of the 

 best-known species. 



The Sternoptychidae. The Sternoptychida differ materi- 

 ally from all these forms in the short, compressed, deep body 

 and distorted form. The teeth are small, the body bright 

 silvery, with luminous spots. The species live in the deep 

 seas, rising in dark or stormy weather. Sternoptyx diaphana is 

 found in almost all seas, and species of Argyropelecus are almost 



FIG. 99. Argyropelecus olfersi Cuvier. Gulf Stream. 



as widely distributed. After the earthquakes in 1896, which 

 engulfed the fishing villages of Rikuzen, in northern Japan, 



