from the Seas of China and Japan. 157 
suleata, suleis confertis puncticulatis; apertura ampla, postice 
valde coarctata, antice dilatata et vix effusa ; labio elongato, ex- 
terne subreflexo; labro postice producto et acute angulato; mar- 
gine postice inflexo, antice crenulato. 
Hab. Mino-Sima; 63 fathoms. 
Differs from S. japonicus, which it equals in size, in the last 
whorl being posteriorly constricted, in the close-set oblique 
grooves, in the narrowness of the last whorl, and in the acute 
hind angle of the outer lip. 
3. Scaphander elonyatus, A. Adams. 
S. testa tenui, alba, clongato-ovata, utrinque angustata, transversim 
suleata, sulcis distantibus, punctatis ; apertura antice producta et 
dilatata, postice coarctata; labio tenui; labro margine regulariter 
arcuato. 
Hab. Mino-Sima; 63 fathoms. 
This species is clongate and narrowed at both ends, and the 
punctate grooves are wide apart. The spire of this and of all 
the other species is “ truncata umbilicata,” or “ occulta,” 
4. Scaphander sulcatinus, A. Adams. 
S. testa elongato-ovata, solidiuscula, postice angustata, fulvescente, 
nitida, transversim sulcata, sulcis simplicibus, distantibus ; aper- 
tura postice coarctata, antice dilatata; labio simplici; labro mar- 
gine regulariter arcuato. 
Hab. Korea Strait ; 46 fathoms. 
This is a small, smooth, rather solid species, transversely sul- 
cate; the grooves fine, simple, and more strongly marked at the 
posterior extremity. 
5. Scaphander Sieboldii, A. Adams. 
S. testa parva, oblonga, alba, subtenui, postice coarctata, in medio 
gibbosula, transversim suleata, sulcis distantibus, punctatis ; aper- 
tura ampla, antice valde dilatata, postice angusta; labio postice 
reflexo, antice tenui arcuato ; labro margine vix recto, postice pro- 
dueto et valde angulato. 
Hab. Tsu-Sima; 26 fathoms. 
The only species at all resembling this is S. pectinalus, from 
which, however, it differs greatly; it is very loosely convolute, 
and the last whorl is gibbose in the middle. 
6. Scaphander dilatatus, A. Adams. 
S. testa ovata, postice angustata, laxe convoluta, alba, tenui, trans- 
versim striata, striis crebris, simplicibus; spira parva; apertura 
ampla, postice angusta, antice valde dilatata; labio tenui; labro 
