GLOSSARY 



TERMS USED IN CONCHOLOGY, 



Acuminated, terminated in a sharp point. 



Anterior, (in Univalves) the part which forms the spire, 

 the summit : (in Bivalves), see Margin. 



Aperture, the orifice or opening of the shell ; it is called 

 bimarginated, when the right lip forms a double mar- 

 gin: coarctate, contracted: compressed, flattened: 

 linear, when narrow and the length greatly exceeds 

 the breadth : transverse, when the breadth is greater 

 than the length. 



Apex, the tip or small end of a shell. 



Articulated, (applied to Multivalves), when the different 

 pieces of which the shell is composed are so strongly 

 united, that they appear to form one shell : (vvlien 

 applied to Bivalves), see Teeth. 



Auriculated, having ears. 



jBrt5e,( applied to Multivalves), the part on which the shell 

 is supported : (to Univalves), the most elevated part of 

 the shell opposite to the spire. 



