JIMBO : GEOLOGY OF JAPANESE SAKHALIN. 23 



by a narrow track on his %vay from Tunnaicha to Cliipesani after passing over 

 the former lake by boat. But the hill-slopes on the shores of the Tunnaicha lake 

 are generally too high to be regarded as of Ouateniarj' formation, although they 

 are covered with dense forests and no rock exposures were actually observed on 

 my way across the lake. On the north shore of the northern basin of Chipesani, 

 we find exposures of Tertiar\' and Palaeozoic rocks. 



A study of microscopic slides after the publication of Kawasaki's map has 

 necessitated some changes in colouration of the areas of Eruptive Rocks. 



Xo fossil localities are distinguished by signs in the map. The cretaceous 

 localities have been already all mentioned in the text. Those in the Tertiaries will 

 be seen in the following table, the place-names occurring in which are mostly to 

 be found on the map. and all the localities observed by myself as well as those 

 by Messrs. Shimotomai and MURATA are given. Of the other localities there 

 may be some omissions which are due to mistakes in m\* notes. 



Table of Principal Localities of Tertiary Fossils mostly Mollusks in Sakhalin. 



(i.) On the west coast of the Western Range : — Ambets. Serutonai, Xayashi 

 near Serutonai, Morochi. Horokeshi. Rikuntomari, Ushtomanai, Porotomari. W'en- 

 niesan, Komoshirara. Kushunnai. Xajoro. Shiraroro, Tomanai. Tomarioro. Otek- 

 koro, Ussu, Chiikai. Tobuts, !Mauka, Tea, Pirochi. Tokombo, Xayashi on the 

 southwestern part of the island, Erumnai, Peshtomanai, etc. 



(2.) On the east coast of the Western Range : — Tomarionnai, Dorogawa, 

 Peshutuni, and Uriu on Aniwa bay ; Itatakushnai to the south of Otasan, Shiraraka, 

 Tomichishi. Poronaipo, near Repungenai. Shiruturu, near Chakamaushnai, the 

 Xayoro river, etc. 



(3.) In the interior of the Western Range : — Shimizu. near Takinosawa, near 

 Xadejdinskoe, Sec. on the Xaibuchi river, the lower course of the Khandasa river, etc. 



(4.) On the east coast of the Xortheastern Mountain-land : — Xarumi and 

 many places on the stretch of about 12 km. to its south. 



(5.) In the interior of the Xortheastern !Mountain-land : — The lower course 

 of the Akhmametieff river. 



(6.) On the east coast of the Susuya Mountains : — between Ochopokka and 

 Tunnaicha, and near Omutö. 



(7.) On the west coast of the Susuja Mountains : — Merei and many places 

 on the sea-coast from Merei to Soloviyofka and on the road from the latter up to 

 Golyi Mys. 



