CYLICHNA. 305 



Has the form of C. alba Brown, and the sculpture of C. concinna, 

 but differs from the latter in being more robust, and in the inner lip 

 being furnished with a distinct oblique plait. (Ad.). 



C. RIMATA A. Adams. Unfigured. 



Shell ovate-cylindrical, rimate-umbilicate, white, thin, shining ; 

 striated at each end ; apex perforated ; aperture linear, acuminate 

 in front, produced ; umbilical chink wide ; inner lip thin, arcuate, 

 simple ; outer lip rounded and produced behind the margin, a little 

 straightened. (Ad., I. c., p. 151, no. 4). 



Korea Strait, 46 fathoms. 



Most like C. umbilicata Mont ; but the last whorl is not acum- 

 inate posteriorly, the aperture is produced in front, and the inner 

 lip is long and arcuated. (Ad). 



C. LATIUSCULA A. Adams. Unfigured. 



Shell small, ovate-cylindrical, acuminate in front, wider behind, 

 rimate-umbilicate, white, thin, smooth, shining; apex profoundly 

 perforated ; aperture narrow ; inner lip thin, simple, arcuate ; outer 

 lip produced behind, broadly rounded. (Ad., I. c., p. 151, no. 5). 



Tabu-Sima, Japan, 25 fathoms. 



Most like C. rimata A. Adams, but is shorter and much wider 

 posteriorly, and the angle of the outer lip is more rounded ; it wants, 

 moreover, the transverse striae at each end. (Ad.). 



C. LEPIDULA A. Adams. Unfigured. 



Shell cylindrical, snowy, solid, polished, in the middle slightly 

 narrowed, posteriorly truncated, the apex slightly perforated, sur- 

 rounded by an acute margin. Aperture linear ; inner lip calloused, 

 with a strong fold ; outer lip with inflexed margin. (Ad., I. c., p. 

 152, no. 6). 



Tsu-Sima, Japan, 26 fathoms. 



This species differs from all others described, in theperiomphalus, 

 or hind part of the body-whorl enclosing the sunken apex, forming 

 an acute well defined ridge. It is a small, white, highly polished, 

 opaque shell. (Ad.). 



C. CONSOBRINA A. Adams. Unfigured. 



Shell cylindrical-ovate, slightly rimate, white, rather solid, longitu- 

 dinally striated, and striated at both ends, the striae distant ; 



