358 



POPULAR CONCHOLOGY. 



obsolete; and in Natica it is often entirely concealed by the 



spreading of the inner lip. 

 Umbones. The bosses in Bivalves. 

 Uncini. Hooks, or bent spines. 



Varices. Longitudinal raised bands or ridges, which occur at regular 

 distances in some Univalves, as Murex, Triton, &c. They mark 

 the progressive enlargement of the shell, being the remnants of 

 former apertures, beyond which the animal, as it increases in 

 size, forms another aperture. 



Ventral. Belonging to the stomach. 



Ventricose. Swollen, or bulging out. 



Vermiform. Worm-shaped. 



Some of these explanations are taken from Mr. Swainson's 

 Malacology. 



