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S. TAN AK A 



them (low into and help to form the Shinano River, which, after 

 running through the Province of Echigo, empties itself into the Japan 

 Sea. Lake Suwa, River Mibu, etc., situated in the southern parts of 

 the province, directly or indirectly discharge into the Tenriu River 

 which finds outlet in the Tötömi Sea. The Kiso River originates 

 from western parts of the province and, after passing through the 

 Provinces of Mino and Owari, empties itself into the Owari Bay. 

 It is then easy to account for the fact that the fish fauna of the 

 province shows affinity to that of the Pacific as well as of the- Japan 

 Sea side. So far as the material on hand go, one may draw therefrom 

 the following conclusions : 



1. The fish fauna of the province is not very rich in species, 

 lacking several species which are common in many other districts. 



2. Cottus pollux Günther is very common, while the closely allied 

 species, Cottus kazika Jordan & Starks, is entirely absent. 



3. Laïcisais joityi Jordan & Snyder and Lcucisciis Jtakiteiisis 

 Günther live together. Some specimens I have seen appear to be the 

 hybrid of the two species. 



4. Odontobutis obscur its (Schlegel), Flitridraco raYisonnetii 

 (Stcindachncr), Sarcoc/icilichthys varicgahts (Schlegel) and certain 

 other common species are not represented in the material, but, whether 

 these are really absent or not, needs to be determined by further 

 observations. 



Petromyzonidse. 



1. Lampetra japonica (Von Martens). 



Local name: Gina; Giname ; Ginami ; Ginayatsume ; Suigina; Sunayatsunie. 

 Numerous specimens, the largest being 14.5 cm. long as measured 

 to tip of tail. Most of them are still in the larval form. 



The snout is distinctly shorter than in Lampetra mitsukurii 



