SCAPHANDER. 255 



This is a small, smooth, rather solid species, transversely sulcate ; 

 r |the grooves fine, simple, and more strongly marked at the posterior 

 r- (extremity. 



SIEBOLDII A. Adams. Unfigured. 



Shell small, oblong, white, rather thin, coarctate behind, rather 

 swollen in the middle, transversely sulcate, the sulci distant and 

 mnctate ; aperture ample, very much dilated below, narrow above ; 

 inner lip reflexed behind, thin and arcuate in front ; margin of 

 mter lip slightly straight, posteriorly produced and strongly angled. 

 [Ad. 1. c., p. 157). 



Tsu-Sima, Japan, 26 fms. 



This may be a Philine. " The only species at all resembling this 

 lis S. pectinatus ; from which, however, it differs greatly ; it is very 

 (loosely convolute, and the last whorl is gibbose in the middle. 



Eu.). 



jS. DILATATUS A. Adams. Unfigured. 



Shell ovate, posteriorly narrowed, loosely convoluted, white, thin, 

 transversely striated, the striae close and simple; spire small; 

 aperture ample, narrowed behind, much dilated in front ; inner lip 

 'thin; outer lip with regularly arcuate margin, posteriorly produced 

 and acutely angled. (Ad., 1. c., p. 157). 



Tsu-Sima, Japan, 26 fms. 



This species is probably a Philine ; but as I have not seen it, and 

 it was described as a Scaphander, the safest course is to leave the 

 form in the latter genus. " This is a slightly convolute, thin, oblong 

 species, with the transverse lines waved but not punctate, and 

 the aperture greatly dilated." 



Subgenus SABATIA Bellardi, 1876. 



Sabatia BELL., Bull, della Soc. Mai. Italiana, ii, p. 209, type & 

 isselii BELLARDI, 1. c., p. 210, pi. C, f. 5-8. DALL, Blake Gastr., 

 p. 53. 



Shell ovate or short-oval, with the aperture as long as the shell, 

 dilated below as in Scaphander ; columella simply concave in adult 

 shells, the parietal wall bearing a spirally entering plicate or smooth 

 callus. Anatomy unknown. Type S. isselii Bellardi, pi. 32, figs. 

 33, 34. 



