FOSSILS FROM THE ENVIRONS OF TOKYO. Ö 



at a few places, such as Shinagawa, Oji, Tabata, etc. Shiuagawa 

 is a southern suburb of the capital and is very near the sea ; 

 the fossils are found at the foot of a hill along a railway cut- 

 ting. Oji and Tabata lie at the foot of the northern continua- 

 tion of a hill in Tokyo, and at Surugadai in Tokyo the same 

 fossil horizon as at Tabata is exposed along the cutting of the 

 Kandagawa. Besides, a few fossils of a still higher horizon are 

 found in Tökvö at Seki2;uchi-daimachi and also at Osaki at the 

 foot of a hill which is a northern extension of the one in 

 Shinagawa which has been mentioned. 



The present paper consists of two parts, descriptive and 

 general. In the former, the shells are arranged according to 

 the system adopted by Tryon in his " llanual of Conchology." 

 The latter is a discussion of their geological age. Localities of 

 shells mentioned either have been determined by my own ob- 

 servations or taken from works written by others, among which 

 I may mention that of Pilsbry, which has proved to be very 

 valuable. 



