from the Seas of China and Japan. 151 
Korea Strait, this is the largest species of Cylichna; it differs 
from that species in being more elongated and less robust, and 
in the angle of the outer lip being produced and angulated, 
extending considerably beyond the apex. 
2. Cylichna proxima, A. Adams. 
C. testa ovato-cylindracea, utrinque rotundata, alba, solida, nitida, 
subopaca, transversim tota minutissime striata, apice profunde 
umbilicato; apertura lineari, in medio constricta, antice dilatata ; 
labio plica crassa obliqua instructo; labro in medio recto, antice 
arcuato, postice subproducto rotundato. 
Hab. Tsu-Sima; 26 fathoms. 
Resembles C. Sarsiz, Phil.; but the aperture is constricted in 
the middle; it is also like C. concinna, A. Adams, but is stouter 
and not produced anteriorly, and the angle of the outer lip is 
rounded. 
3. Cylichna venustula, A. Adams. 
C. testa ovato-cylindracea, utrinque subangustata, alba, solidula, ni- 
tida, transversim tota subtilissime striata, apice perforato; aper- 
tura lineari, antice dilatata; labio arcuato, plica obliqua instructo, 
antice vix truncato ; labro margine regulariter arcuato, 
Hab. Mino-Sima; 63 fathoms. 
Has the form of C. alba, Brown, and the sculpture of C. con- 
cinna, but differs from the latter in being more robust, and in 
the inner lip being furnished with a distinct oblique plait. 
4. Cylichna rimata, A. Adams. 
C. testa ovato-cylindracea, rimato-umbilicata, alba, tenui, nitida, 
utrinque striata, apice perforato ; apertura lineari, antice acumi- 
nata, producta, rima umbilicali lata; labio tenui, arcuato, sim- 
plici; labro postice producto, rotundato ; margine rectiusculo. 
Hab. Korea Strait ; 46 fathoms. 
Most like C. umbilicata, Mont.; but the last whorl is not 
acuminate posteriorly, the aperture is produced in front, and 
the inner lip is long and arcuated. 
5. Cylichna latiuscula, A. Adams. 
C. testa parva, ovato-cylindrica, antice acuminata, postice latiore, 
rimato-umbilicata, alba, tenui, levi, nitida, apice profunde perfo- 
rato ; apertura angusta; labio tenui, simplici, arcuato; labro pos- 
tice producto, late rotundato. 
Hab. Tabu-Sima; 25 fathoms. 
Most like C. rimata, A. Adams, but is shorter and much wider 
