166 



cardo debilissimus. Long. 28; alt. 1">; lat. 4 millim. Taken oil* the 

 coast of China, 23° 80' N. in sand, 25 fathoms. W. S. 



Psammobia TENi'.u.A. T. tenuis. fragilis, alba, pellucida, glabra, 

 elongato-elliptica, vel potius postice angustior et subtruncata; um- 

 bonibus vix postmedianis, acutis; margine dorsali postica cristata, 

 juxta umbonibus emarginata; declivitate umbonali conspicuo; ex- 

 tremitate antica rotundata ; margine ventrali lente arcuata. Long. 

 12 ; alt. (! ; lat. 3 millim. Inhabits Hong Kong Harbor, in 8 fathoms. 

 \Y. S. 



Simele duplicata. T. ovato-reniformis, tenuis, compressa, 

 straminea, laminis erectis plerumque geminatis erectis prope apicem 

 desideratis ornata ; umbonibus postmedianis, elevatis ; margine dorsali 

 antica incurvata ; marg. postica sensim arcuata; portione posticS 

 altiori. aeutiori ; plica submarginali obsoleta: cardo debilis ; dentibus 

 lateralibus approximatis. Long. 20; alt. 16; lat. C> millim. Inhabits 

 Kagosima Bay, in 6 fathoms, sandy bottom. W. S. 



Almost identical in form with r /'t//i/tu lyra, which has a smooth fold 

 and more remote ridges. S. sedbra Hanley, is similar, but has radia- 

 ting lines between the ridges. It probably grows larger. 



Semele alveata. T. subeireulai'is admodum convexa, fere 

 equilateralis, flavida, concentrice laminato-striata ; interspatiis radia- 



tim clatliratis, radiis laminas liaud equitantibus ; plic§ submarginali 

 conspicua; margine dorsali excavata ; extremitate postica subtrun- 

 cata. Cavositas versus umbones flavida. Long. 90; alt. 28; lat. 15 

 millim. Inhabits Loo Choo. W. S. 



Some specimens in the Cuming Coll. are rather more solid. 



Kkvii.ia i;i>culpta. T. crassa, elongata, ovato-trigonalis, alba 

 vcl ]iurpuraseens, eoncentriee sulcata excepts area postero-dorsali 

 radiatim arata; umbonibus purpureis vix antemedianis ; extremitate 

 antica rotundata; cxtrem. postica oblique truncata, angulo postero- 

 vcntrali aeuto; margine ventrali arcuata: cavositas nitida; sinu 

 siphonali angusto, linguiformi. Long. (' ; alt. 4 ; lat. 3 millim. In- 

 habits Kagosima, in sand, 5 fath. W. S. 



The coloration and sculpture is quite pretty and peculiar. 



Kkvii.ia i.ivida. T. minuta, tenuis, elongata, ovato-triangularis, 

 antice rotundata, postice acuta, rufescens vel rubido obsolete radiata 

 (intus ejusmodi picta) concentrice striatula; umbonibus vix ante- 

 medianis : cardo debilis. Long. 7 ; alt. 4 ; lat. 3 millim. Inhabits 

 Kagosima Lay. in sand, 5 fathoms. W. S. 



SCROBICTJLARIA CADUCA. T. parvula, tenuis, lucida. fragilis, 

 submargaritacea, albida, ovata postice oblique truncata, subglobosa, 

 equilateralis, striis concentricis exihbus, quibusdam utroque laminosis 

 uotata; declivitate innbonali postica angulata : cavositas nitida, hneis 



