'62 FÜSUS SIEBOLDI. 



NOTE IL 



DESCRIPTION OF A NEW SPECIES OF FÜSUS 

 FROM JAPAN. 



M. M. SCHEPMAN. 



Fusus Sieboldi, n. sp. 



Shell fusiform, white ; whorls 8 , slightly concave at the 

 upper part, rather inflated and rounded beneath; nucleus 

 smooth and semitransparent, each of the next whorls 

 with about 10 eostae , which become obsolete on the Q^^ 

 and are entirely wanting on the ultimate and penultimate 

 whorl. The entire surface of the shell , with exception of 

 the nucleus, is covered with close set lines of growth and 

 spiral lirae, of which latter there are 13 on the penulti- 

 mate whorl, besides a few much finer intermediate ones, 

 which alternate rather regularly with the coarser lirae and 

 are more clearly seen on the ultimate whorl ; the lirae are 

 slightly granulate. Last whorl regularly contracted to the 

 base and produced into a moderately long canal , which 

 is slightly curved. Aperture oval, columella smooth, slightly 

 excavated , with a thin white callosity ; interior of the aper- 

 ture smooth and white. 



Length 40, diam. 16 mill. — Length of the aperture, 

 including the canal, 24, width 7^2 mill. 



Hab. Japan , collected by von Siebold (Leyden Museum). 



llhoon near Rotterdam, November 1890. 



Notes from tlie Ley den ÜMuseum , "Vol. XIII. 



