PROCEEDINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 



Vol. IX, No. 9, pp. 271-272, pi. 20 October 22, 1919 



IX 



DESCRIPTION OF A NEW FOSSIL FISH FROM JA^A'C 



( ^^M 3 1920 ) 



BY DAVID STARR JORDAN '^^^Jtjr, 



Iquius nipponicus Jordan, new genus and species 



Type (No. 441, Museum California Academy of Sciences) 

 is a well preserved imprint of the anterior three-fifths of a small 

 fish from the island of Iki, off the north coast of Kiusiu, Japan. 

 The portion preserved is four inches long, the whole fish 

 probably about seven. 



Head 1.3 times in depth at front of dorsal; eye 2.5 in head; 

 gape of mouth 4 in head ; length of mandible 5 ; height of dorsal 

 1.6 in head ; length of pectoral 1.43 ; length of ventral 1.5. 



Dorsal rays I, 8 ; pectoral 16 ; ventral 14. Vertebra to front 

 of dorsal 12; to first interspinal 10; abdominal vertebrae about 

 23 (some lost) ; total probably not far from 36. 



General form like that of a herring; the occipital region 

 rather depressed, the nape rising moderately behind it; snout 

 apparently short, a little more than half eye, probably rather 

 acute; mouth small, oblique, the lower jaw shorter and rather 

 thin, but with a broad base at insertion; both jaws apparently 

 with small bluntish teeth, one near tip of lower jaw larger. 



October 22, 1919 



