MARGINELLA.— Plate XXIII. 



Species 129. (Mus. Cuming.) 



Marginella Ovulum. Marg. testa ovatd, OvuUformi, 

 nitente-albd, spird inimersd, anfractibus superne pro- 

 ilitctis, labro modice incrassato, aperturd cnrvatd, colu- 

 mella qiiadripUcatd. 



The Ovulum Marginella. Shell ovate, Ovulum- 

 slinped, shining-white, spire immersed, whorls pro- 



duced at the upper part, lip moderately thickened, 

 aperture curved, columella four-plaited. 



SowEUBY, Thes. Conch. Marg. p. 401. pi. 78. f. 18S. 



Hab. ? 



The last whorl of this species is curved and produced 

 over the spire, giving the shell the appearance of an Ovu- 

 lum. 



