218 



plaited, with alternate broad, eharp edged and very fine spiral ribs; suture distinct. 

 Mouth ovate; throat grooved, outer lip crenulated; canal elongated, tapering, transver- 

 sely striated, smooth in front. 

 Length 5 inches. 



Inhab. China; not uncommon. 



Compare with F. lalicoslatus Desh., bul the ribs are not broad and depressed. 

 The nucleus of Ihis species, as in the raost of the genus, is quite smooth, sub- 

 cylindrical, blunt, of one whorl and a half; the periostracum Ihin, pale, brown, 

 hairy. 



