Class VI. VOLUTA. VOLUTE. 265 



Mont. Test. Br. Sup. 99. ]2. tripli- 



cata. 



* V. with a smooth ovate shell ; chesnut brown ; 

 six volutions, first very large ; aperture narrow; 

 pillar with three plaits; length scarcely half 

 an inch. 



Mont. Test. Br. Sup. 100. 13. biden- 



TATA. 



* V. with a strong conic white glossy shell, of 

 six or seven volutions ; pillar furnished with 

 plaits like teeth ; length a quarter of an inch. 



Found near Dunbar, and on the Devonshire 

 coast. 



Mont. Test. Br. Sup. 10*. 14. hyali- 



NA. 



* V. with a smooth pellucid shell ; six flat vo- 

 lutions and obtuse apex. 



Shell bank near Dunbar. 



Mont. Test. Br. Sup. 102. 15 _ BULLA< 



OIDES. 



* V. with a pale ovate horn-colored shell, hav- 

 ing eleven or twelve flat subimbricated volu- 

 tions ; aperture contracted, with one strong 

 spiral ridge on the columella, which is extended 

 into a canal ; length three eighths of an inch. 

 In Mr. Laskeys cabinet. 



