156 SPECIFIC 



them. The characters of the three species are ill 

 defined, and applied indiscriminately to each. It 

 were perhaps better to confine the shells with a 

 flattened spire to Oliva, those with a very long one 

 to Uiriculus, and the intermediate degrees to Ispi- 

 dula. The annexed specimen would then be a 

 variety of Ispidula. 



Fig. 3. V. Persicula. 



Shell smooth ; spire retuse — umbilicate ; colu- 

 mella with seven plaits 5 margin of the outer lip 

 crenate. 



Lister Conch, tab. 803. fig. 9. 



Specimen white, with chesnut transverse Hues, 



Inhabits the African Sea and Senegal. 



Fig, 4. V. Papalis. 



Shell emarginate, transversely striate; margin 

 of the whorls and outer lip denticulate ; columella 

 with four plaits. 



Lister Conch, tab. 840. fig. 68. 



Specimen white with large bright yellowish red 

 spots. This second variety differs in many respects 

 materially from the first. It is always much smaller. 



