38 TERMS USED 



Crenulatum is when the edge is wrinkled, as in Buccinum Persi- 

 cum and patulum. 



Tetradactylum is when the edge of the outer Hp is extended into 

 four claws, as in Strombus Pes pelecmii. 



Hexadactylum is when tlie outer lip is extended into six claws, 

 as in Strombus Chiragra. 



Heptadactylnm is when it has seven claws, as in Strombus 

 Lamhis and Scar pins. 



Decadactylum is when the lip is furnished with ten claws, as 

 in Strombus Millepeda. 



Trilobum is when the outer lip terminates in three obtuse divi- 

 sions or lobes, as in Sti^ombus lentiginos%is. 



Prominens is when the outer lip is but a little extended, as in 

 Strombus Pugilis. 



Rotundatwn is when the outer lip is more extended and 

 roundish, as in Strombus Epidromis and Gigas. 



Attenuatum is when the edge of the outer lip is very thin, as in 

 Strombus Urceus and dentatus. 



Fissum is when the edge of the outer lip is notched at the end 

 nearest the spire, as in Murex babylonius. 



Perpendicidare is when a small part of the shell is seen within- 

 side suspended from the summit of some Patellce, as in Pa- 

 tella equestris. 



Laterale is when a kind of partition is seen attached to one 

 side within a Patella, as in Patella chinensis and neritoidea. 



Concavicm is when a Patella has a concave partition within, as 

 in Patella for nicata. 



