• ^ PTYCHATRACTUS. 



Ml*. Stearns has added a second species, which may not be dis- 

 tinct ; and I phice here (becanse I must ])lace it somewhere) tlie 

 Fusus Coreanicus of Mr. E. A. Smith. 



Genus PTYCHATRACTUS, Stimpson. 



P. LiGATUs, Migliels and Adams. PI. 40, fig. 185. 



Shell light reddisli brown. Length, •75 inch. 



Coasts of Maine, Noca Scotia ; Gulf of St. Lmcrence ; 



in deep water. 

 Operculum like that of Fiisuii. 



P. occiDENTALis. Stcams. 



Shell elongated, fusiform, rather slender, whitish, travei'sed by 

 narrow, revolving, brownish threads and much wider intervening 

 spaces ; suture distinct, spire tapering ; a^ierture oblong-oval, 

 about half the length of the shell ; within white, polished ; canal 

 short, nearly straight ; columella obliquely, not strongly plicated. 



Length, 'Y5 inch. 



Isle of jVagai, one of the Shamaf/in Islands, Forty fathoms. 



More delicate than the Atlantic species, although the single 

 specimen was not (^uite mature. This specimen having been 

 mislaid, Mr. Stearns has not yet figured it. It must be con- 

 sidered a doubtful species for the present, as the description 

 presents no features by which the shell can be positively dis- 

 tinguished. 



P. Coreanicus, E. A. Smith. PI. 40, fig. 18(1. 



Whorls slightly longitudinally costate and encircled by about 



twelve revolving ridges, which are alternately smaller. Dirty, 



diluted flesh-color, the ribs stained with dark brown ; fuscous 



within the aperture. Columella smooth, arcuate above, very 



oblique inferiorly ;" canal short, slightly retroverted. 



Length, 22 mill. 



Japan. 



The evanescent ribs are sometimes indicated ver}- obscurely 

 on P. ligatvH. Nothing is said about columellar folds, but these 

 are sometimes not ;ipparent on P. Ivjahm. The general form of 

 the sliell is so nearly that of Pti/cJiafrncliis. that I do not know 

 where else to place it with equal probability of giving it its 

 correct position. 



