The Grayling and the Smelt 197 
related to the Dercetide is the American family of Stratodontide 
with its two genera, Stradodus and Empo from the Cretaceous 
Fic. 98.—Eurypholis freyeri Heckel. Family Enchodontide. Cretaceous. 
(After Heckel; the restoration of the jaws incorrect.) 
(Niobrara) deposits of Kansas. Empo nepaholica is one of the 
best-known species. 
The Sternoptychide.— The Sternoptychide 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 
Fic. 99.—Argyropelecus olfersi Cuvier. Gulf Stream. 
as widely distributed. After the earthquakes in 1896, which 
engulfed the fishing villages of Rikuzen, in northern Japan, 
