Rhichardsonius. 9 
dorsal ; pectoral moderate, without flap ; ventral inserted slightly before dorsal, with a 
fleshy flip; caudal emarginate, the lobes pointed. Scales cycloid. Lvteral line 
slightly decurved and continuous. 
Color in formalin dark brown above, pale below; dorsal and caudal as well as 
pectoral brown, the edges of the former two fins darker ; anal and ventral pale. 
Described from a specimen about 19.5 cm. long as measured to tip of caudal, 
taken at Matsumoto, Prov. Shinano, by Mr. Kono No. 2133, Science College Museum, 
Tokyo. 

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