Notes on Fresh-water Fishes 

 from the Province of Strinano, Japan. 



BY 



Slriseho Tanaka, Rigakushi. 



Research Scholar, Science College, Imperial University of Tokyo. 



For some time past Mr. Teisuke Vagi, instructor ot natural 

 history in the middle school of Nagano (Province Shinano), has been 

 making an extensive collection of fresh-water fishes from several parts 

 of the province. It was sent to me for study. In addition to it I 

 have examined several other collections made in the same province ; 

 amongst these the one made by Mr. R. Köno of the Girls' Normal 

 School in Matsumoto must be specially mentioned on account of its 

 importance. A study of the rich material, thus brought together, 

 besides giving me an idea of the local fish-fauna, has enabled me to 

 regard several species, considered to be distinct by many authors, to 

 be simply synonymous with certain other species. The material at 

 my disposal may be referred to twenty-five species in all, which I 

 propose to record and to annotate upon in the present paper. 



A few words here about the physical character of the district in 

 question may not be amiss. Shinano is one of the largest provinces 

 of Japan, situated in about the middle of Japan proper (Hondo). It 

 is strictly an inland province, no part of it bordering on the sea-coast. 

 A system of mountain ranges covers the entire province, and offers 

 ivater-sheds towards both the Pacific and the Japan Sea. The streams 

 draining the northern parts ot the province, among which are to be 

 mentioned the Adsusa, the Sai, the Hirose, the Hotaka, the Takase, 

 the Chikuma, etc., take generally a northward course ; nearly all of 



