NOTES ON S031E JAPANESE FISHES. 



21 



Acipenser ^nultiscutatus, n. sp. 



PI. IL, fig. 1. 



Head 4i in total length to base of caudal ; height of body 

 (3| ; snout 2i-i in head; eye 171; interorbital lie; height of 

 highest ray of dorsal 4 ; length of longest ray of pectoral 1 i ; 

 upper lobe of caudal 1» times length of head; number of dorsal 

 plates 15 to 16 ; of lateral plates 41 to 43 ; of ventral plates 12 

 to 16 ; of dorsal rays VII, 35 ; of anal rays VII, 28. 



Head longitudinally concave above ; its plates rugose, without 

 sharp prickles ; snout shortish, rather obtuse. Dorsal and lateral 

 plates each with a median longitudinal ridge, without distinct 

 spine. Dorsal plates large, rugose ; a small plate lies near behind 

 each of fourth to seventh dorsal plates. Lateral plates a little 



