62 ART. 2. — S. TOKUNAGA. 



Brauns took this species as identical with P. glycimeris L. 

 from the Mediterranean Sea and Great Britain, but these two 

 species seera to me to have many points of difference. Firstly, 

 P. glycimeris L. is quite orbicular and equilateral, having the 

 same dimensions in length and height, while our species is oval, 

 and inequilateral, the length being greater than the height ; 

 secondly, P. glycimeris L. has a broader ligamental area ; thirdly, 

 the breadth is decidedly less in P. albo-lineatas Lke. than in 

 P. glycimeris L. 



Oji (very abundant), Shinagawa (frequent). 



Living : Tokyo, Possjet Bay, Hakodate, Kitami, Bekkai 

 (Hokkaido), Aomori, Kii, Izugihara (Tsushima), Tosa and Fusan 

 (Corea). 



152. LT3IOPSI8 WOODWAKDI A. Adams. 



Brauns, Geol. Yaw. Tokio, p. o7. — Dunk er, Index ^loU. Maris Jap., 

 p. 237.— Rep. Chall. Exp., Vol. XIII., p. 256.— AVood, Crag Moll., 

 II., p. 70. 



Brauns determined the specimens of this species abundantly 

 found at Oji as L. aurita Br. hitherto found in the Crag and the 

 Miocene of North Germany and the Sub-appennine formation, 

 and said that this still living species only known from the N. 

 W. Coast of Britain liad been found neither in the Pacitic 

 Ocean, nor in the East Indian Seas. But by a careful study 

 I have found many differences between them : firstly, the um- 

 bones in L. aurila Br. are not central but turned forwards, 

 thus giving an oblique inequilateral outline to the shell ; secondly, 

 the breadth is greater in L. aurita Br.; thirdly, L. woodwardi 

 A. Ad. is distinctly angular at both edges of the dorsal side, 

 while in L. aurita Br. tliev are rounded. Beside these signi- 



