UNIVALVES. BUCGINUM. VS 



B. WitJi a short exsertedf reflected beak : lip outwardly 



unarmed. 

 *Minutum. Peiinatuni. 



*L8eve. Maculosum. 



*Obtusissimum. Bi ineatum. 



Echinophorum. Gibbum. 



Plicatiim (Plaited Helmet.) Veutricosuni. 

 Cornutum {Horned Helmet.)'!itr\gosmn. 

 Rufum {BvlVs Mouth H.) Rugosiun 

 Tuberosum (Casket.) Pouderosum. 



Flamineum {Triangular C.)Recuivirostruni. 

 Tesficulus {Purse H.) Trifasciatum. 



Decussatuni (Pincushion.) Senegalicuni. 

 Areola. Othroleucurn. 



Tigrinuni. Striatum. 



Undulatum. Cassis. 



Cicatricosum. Strigatuni. 



Tessellatum {Dice C) Tyrrlienum. 



Abbreviatum. 



C. Lip prickly t outioardly, on the hinder margin. 

 Ermacens. Noilulosum. 



Glaucum (Bezoar Helmet.) Fimbria. 

 Vibex {Jfjate C-) Papillosum. 



Tessellatum. Glaus. 



D. Pillar lip dilated and thickened. 

 Arcu\^v[3i{FingersSrThnmbs)Mnii\bi\e. 

 *Pullus. Neriteum. 



Gibbosulum. 



E. Pillar lip appearing as if worn flat. 

 Harpa {Musical Harp.) Pcrsicum {Necklace Scoop.) 

 Costatum {3Iant/ ridged 7y.)Monodou (Unicorn S.) 



