150 



sime striatis, striis (circ. 7) plerumque minutissime puncticulatis ; 

 basi protracta. Apertura ovata ; labro acuto ; plica columellari 

 inconspicua, obtusa. Axis 10 ; diam. 3.5 millim. Inhabits China 

 Seas. W. S. 



Monoptygma acuminata. T. parva, subulata, tenuis, polita, 

 ex albo viridescens ; nucleo laterali ; anfr 10, ultimo dimidiam totius 

 longitudinis a^quante, subangulari ; sutura lineari, linea subsuturali 

 comitante. Apertura anguste ovata; plica columellari modica. 

 Axis 6 ; diam. 2 millim. Inhabits Ousima. W. S. 



Monoptygma sinuata. T. ovato-conica, tenuis, albida ; 

 vertice declivi, celato ; anfr. 6 rotundatis, striulis incrementi, et 

 striis volventibus tenuissimis rugulatis. Apertura ovata ; labro 

 acuto postice sinuato ; plica columellari acuta, declivi. Axis 18 ; 

 diam. 4 millim. Inhabits China Seas. W. S. 



Has an Odostomoid look, and in growth is like Limnea trun- 

 eatula. 



Turbonilla obeliscus. T. satis magna, solida, elongata, 

 albida ; nucleo trivolvi, lucido, nutante ; anfr. 12 planatis, clathris 

 20-36 obtusis, interdum interruptis ornatis, interstitiis parum im- 

 pressis antrorsum seusim evanescentibus ; basi subglobosa. Aper- 

 tura ovato-quadrata ; labro tenui ; columella parum intorta. 

 Axis 10.5 ; diam. 3 millim. Inhabits Simon's Bay, at low water, 

 under stones. W. S. 



Turbonilla c^elata. T. ovato-turrita, obtusa, solida, alba, 

 nucleo bivolvi, helicoideo, nutante ; anfr. 9 planatis, tabulatis, 

 clathris 20-24 rectis plerumque continuis, angustis ; interstitiis 

 a»quantibus, striis 10-12 spiraliter exaratis ; basi rotundata minus 

 insculpta ; columella valde intorta. Axis 6.7 ; diam. 1.7 millim. 

 Inhabits Hong Kong. W. S. 



Well marked by its obtuse point, deep sculpture, and strongly 

 twisted pillar. 



Turbonilla ornata. T. gracilis, ochracea, fascia praesuturali, 

 et basali albida cincta ; anfr. 8 -f- planatis, clathris rectis validis 

 obtusis omnino munitis ; interstitiis vix requantibus profundis, striis 

 10-14 spiraliter insculptis ; sutura impressa ; basi ovata. Aper- 

 tura ovata ; columella haud valde intorta. Axis 6.7 ; diam. 1.5 

 millim. Inhabits Hong Kong. W. S. 



