IN DESCRIBING SHELLS. 41 



Sqiianiulis is with little scales, as Telltna Lingua felis and 



Buccinum decussatum. 

 Thiherculata is when covered Avith little raised knobs or 



tubercles, as Buccinum papillosum, Cyprcea Nucleus, and 



Trochus maculatus. 

 Nodosa is knotty, as in Ostrea nodosa, Cardium tuberculatum, 



Murex Trunculus and Lignarius. 

 Spinis is when it is armed with long prickles or spines, as in 



Murex Brandaris and Trunculus, and Turbo Delphinus. 

 Muricata is covered with many sharp points, as Chama Gry- 



phoides and Buccinum patulum. 

 Scabra is rough, as Tellina L/ingua felis and Buccinum Per- 



sicum. 



^ 



c 



