40 TERMS USED 



Striata is marked with small elevated lines, as in Nen'la 



Peloronta, Venus islandica, and Valuta 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. 

 Cingido is with a band raised above the general surface, as 



in Strombiis Oniscus and Buccinum Dolium and rnfum. 

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

 Sulcata is grooved, as in Venus Dione and Cypr<xa Pediculus. 

 Costata is ribbed, as in Murex senticosus and Cardium 



costatum. 

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



sostomus. 

 Varicihus 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, Buccinum Arcularia, and Valuta cancellata. 

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



Turbo scalaris, Clathrus, and Uva. 

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

 culata and Murex reticidaris. 

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

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



Lazarus and Ostrea diluviana. 



