j SOWERBY : NEW MARINE MOLLTTSCA FROM CEBTJ. 129 



sutura anguste canaliculata sejuncti, juxta suturam lira angusta 

 marginati, striis spiralibus vix couspicuis sculpti ; umbilicus intus 

 spiraliter sulcatus ; apertura rotundata, ieviter obliqua ; peristoma 

 simplex. Alt. 1*2, lat. 2 mm. 



Shell rather depressed, rounded, smooth, whitish, rather widely 

 umbilicated ; suture narrowly channelled, furnished with a distinct 

 ridge and a few faint striae ; umbilicus conspicuously spirally grooved. 



12. Eingicula Kochiana, n.sp. PI. XI, Fig. 12. 



Testa parvula, ovata, crassa, alba ; spira elatiuscula ; anfractus 5, 

 convexi, spiraliter sulcati, sutura canaliculata sejuncti, ultimus 

 oblongus ; apertura elougata, sub - auriculif oralis, postice anguste 

 canaliculata ; peristoma crassum, margine columellari valde calloso, 

 triplicato, plica postica, crassa, tuberculiforme, plicis anticis validis, 

 obliquis, externo intus bidentato, dente antico parviusculo, acuto, 

 postico valide producto. Long. T5, diam. 1mm. 



A remarkable little species, chiefly characterized by the outer lip 

 being furnished in the middle with a strong tooth-like projection, and 

 anteriorly with a smaller, more acute one. The shell has much the 

 aspect of a Plecotrema. 



EXPLANATION OF PLATE XI. 



Fig. 1. Ocinebra Kochiana. 



,, 2. Mitra alabaster. 



,, 3. Marginella ringicula. 



,, 4. Natica labro-tincta. 



,, 5. Mueronalia Philippinarum. 



,, 6. Mueronalia cylindrica. 



,, 7. Glyphostoma rugilabrum. 



,, 8. Leptothyra viridula. 



,, 9. Cyclostrema cristata. 



,, 10. Cyclostrema dispar. 



,, 11. Vitrinella simplex. 



,, 12. liiugicula Kochiana. 



