34 TERMS USED 



Subulata is awl-shaped or tapering, as in Bidla Terebellmi. 



Acuta is sharp-pointed, as in Bulla rivalis. 



Acutissima is ending in a very sharp point, as in Strombus 

 costatus and Trochus papillosus. 



Obtvsa is blunt pointed, and is opposed to Acutus, as in Valuta 

 Coffea and pallida. 



Leevigata is with the whorls of the spire smooth as if worn with 

 water, as in Valuta glabella and Olla. 



Coronata is crowned or encircled with prominences, as in Va- 

 luta cethiopica and several of the genus Conus. 



Inermis is unarmed or without any prominences, and is op- 

 posed to coronatus, as Conus glaucus. 



OF THE APERTURE, APERTURA. 



Integra is when the mouth is whole or withovit any canal or 

 notch on the margin, as is the case with the genera Nerita, 

 Helix, Turbo, and Trochus, and part of the genus Valuta, 

 and some Bull(x. 



Coarctata is when the aperture is contracted or compressed, as 

 in some Bullce, but without a hollow or notch. 



Effusa is when the aperture has a notch or spout as if formed 

 to pour out a fluid, as the aperture of Cyprcea, which is 

 effuse at both ends, but the aperture of the Cones is efflise at 

 one end only. 



Dilatata is when the aperture is very much spread out, as in 

 Helix haliotoidea. 



Circinmata is with the apertiire round, as in Turbo fontinalis 

 and cristatus. 



