524 PROCEEDINGS OF THE NATIONAL MUSEUM. vol xxxii. 



deep water off the headland of Awa at the entrance to the Bay of 

 Tokyo. 



The species was previously known from a single specimen 27 inches 

 long obtained by the Challenger expedition at Tokyo. The species 

 is regarded as a food fish, although very rare. It differs from Haryo- 

 don neJiereus in the small pectorals. 



{/diKpos, small; Jf/p hand.) 



SUMMARY. 

 Family SYNODONTID.E. 



1. Trachinocephalus Gill, 1861. 



1. viyops Forster, 1801; Tokyo, Wakanoura, Nagasaki. 



2. Synodus Gronow, 1763. 



2. japonicus (Houttuyn), 1782; Wakanoura, Nagasaki. 



3. Saurida Cuvier and Valenciennes, 1849. 



3. argyrojyhanes (Richardson) 1846; Tokyo, Kobe, Hiroshima, Wakanoura, Kawa- 

 tana, Hakata, Nagasaki. 



4. eso Jordan and Herre, 1907; Wakanoura, Kobe, Tsuruga. 



4. Harpodon Le Sueur, 1825 



5. microchir Giinther, 1878, Tokyo. 



