40 TERMS USED 



Striata is marked with small elevated lines, as in Nerila 



Peloronta, Venus islandica, and Vohita mercatoria. 

 Radiata is rayed or marked with coloured streaks diverging 



from the beak, as in Venus Gallina. 

 Fasciis is with coloured bands, as in Conus Mercator. . 

 Radiis, with raised ridges diverging from the beak, as in 



Ostrea maxima and Ziczac. 

 Cingulo is \\ itli a band raised above the general surface, as 



in Strombus Oniscus and Buccimim Dolium and rufum. 

 Sidcis, with ridges, as in Cardium Isocardia and Fragum. 

 Sulcata is grooved, as in Venus Dione and Cyprcea Pediadus. 

 Costata is ribbed, as in Murex senticosus and Cardium 



costatum. 

 Rugosa is wrinkled, as in Mytilus rugosus and Turbo Chry- 



sostomus. 

 Varicibus is with swelled ribs or sutures across the whorls, as 



Buccinum Harpa and costatum. 

 Plicata is as if the shell was folded or with plaits, as Ostrea 



diluviana, Buccimim Arcidaria, and Valuta cancellata. 

 Cancellata is with either channels or ribs across the whorls, as 



Tiirbo scalaris, Clathrus, and Uva. 

 Reticulata is as if covered with net work, as in Tellina reti- 

 culata and' Murex reticularis. 

 Imbricata is tiled, as in Ostrea Lima and Cardium Isocardia. 

 hamellis is covered with thin leaf-like plates, as in Chama 



Lazarus and Ostrea diluviana. 



