383 



labro tenui ; sinu fere desiderato ; columella rotundata, polita ; 

 canali lato brevissimo. Axis 10 ; diam. 4 millim. Inhabits 

 Loo Choo. W. S. 



Olivella spreta. T. parvula, elongato-ovata, livida, strigis 

 flexnosis longitudinalibiis flavidis picta : spira admodum elevata ; 

 anfr. 4 ; sutuni canaliculata, : apertiira f totius longitudinis cito 

 dilatata ; columella plicis eminentibus bifidis rufis munita. Axis 

 6 ; diam. 3 millim. Inhabits Hong Kong Harbor, in 10 fathoms, 

 shelly sand. W. S. 



Most like 0. mutica, but the pillar lip differs. 



Genus ^sofus. Animal albidum ; solea antice emarginata, 

 postice obtusa operculum corneum flabelliforme gerente ; capite 

 parvo ; vibraculis curtis obtusis ; oculis externis medianis ; siphone 

 lato, brevissimo. Testa fusiformis, gibbosa, antice late truncata ; 

 apertura lunata, angulo postico callo impleto ; columella simplici 

 vitreo induta ; sutura prope aperturam abnormaliter arcuata. 



The curious curve of the suture near the posterior angle of the 

 aperture, as if it had been drawn backward, thereby pulling 

 back this angle and curving the last whorl downward, is very pe- 

 culiar. The form and aspect of the shell, and the structure of 

 the animal, indicate its place to be intermediate between Mitra 

 and Columhella. 



^. jAPONicus. T. parva, solidula, castanea, prope suturam 

 pallescens, striis volventibus incisa ; anfr. 7 tumidulis, posticis 

 plicatulis, ultimo ovali, late truncato, | totius long. testa3 ade- 

 quante : apertura lunata ; peritremate reflexo ; columella lamina 

 vitrea lata suberecta induta. Axis 7 ; diam. 2 millim. Inhabits 

 Kagosima Bay, at 5 fathoms, sandy bottom. W. S. 



The only species as yet found, but quite peculiar enough to 

 distinguish it from all other shells. 



This very distinct genus, both as to shell and animal, plainly 

 belongs to the family Amphiperasidce, having the form and lip of 

 Ovula, while the base is traversed by sharp transverse ridges, as 

 in Cyprcea, passing over the pillar into the aperture. The broad 

 and short tentacles, the position of the eyes, and the long, obtuse 

 foot of the animal, are quite peculiar. 



