12 



M, 

 M. 



GENUS. MARGINELLA. Lamarck, 1799. 

 angustata, var. Sowerby. Indian Ocean. 



3 M. 



4 M, 



5 M. 



1 E. 



cornea. 



cylindracea. 



prunum. 



Lamarck. 



G-melin. 



Senegal, W. Africa, 

 Sandwich Islands. 

 a Panama. 

 b Senegal, 

 quinqueplicata. Lamarck. Indian Ocean.* 



GENUS. ERATO. Risso, 1826. 

 Maugerise. Gray. Panama. 



FAMILY 2. COLUMBELLINJE. 

 GENUS. COLUMBELLA. Lamarck, 1799. 



M. Robillard. 



b NorthernCircars. SirW.Denison. 



14 C. various. Tahiti. M. Robillard. 



15 C. versicolor. Philippines. 



FAMILY 13. HARPID^E. 

 GENUS. HARPA. Lamarck, 1799. 

 1 H. minor. Rumphius. a Philippines. 



b Port Blair, An- Dr. Walters, 

 damans. 



