268 



A. COLOMBELLA. 



1 1) 



'• *| voluta rustica. — Linn. 



Soiuerbys Genera, No. 9, pi- 6. 

 The shells constituting this genus are short, small, ra- 

 ther thick, often striated transversely, and much varied 

 in color; they appear allied in some respects to the 

 G. Mitra. Linnaeus considered them to belong to the G. 

 Voluta, from which they are very distinct, having the 

 interior part of the right lip or margin gibbous, or 

 thickened, rendering the aperture narrow and waved, 

 and by having also a very small thin elliptical opercu- 

 lum. Which latter circumstance Sowerby observes 

 allies this genus to that of Ricinula. Shell oval; spire 

 short; plaits on the columella; more or less notched 

 at the base ; and without a canal. They are marine 

 shells. Sowerby has corrected the name of this genus, 

 which should be written Columbella. 

 Columbella strombifor- Columbella flavida [ta 



mis semipuncta- 



rustica bizonalis 



mercatoria reticulata 



