DESCRIPTION. 
127 
Specimen white, with obsolete purple rays ; area 
cordate ; fore part strongly marked with decussate 
strise. 
Inhabits the European and American seas. 
PLATE VII. 
Fig. 1. Hinge of Venus concentrica. 
Fig. 2. Venus Paphia, 
Shell subcordate, with thickened transverse 
wrinkles which are attenuated towards the anterior 
slope; lips complicated. 
Lister Conch. Tab. 279. 
Specimen white, with interrupted brown rays, 
spots and lines ; areola cordate, brown ; transverse 
ribs broad and convex. 
It has been considered a needless increase of 
sections to separate, as in Gmelin’s edition of Lin- 
neeus’s Systema,’" those shells which are said to 
be muricate before, from those which are not so, 
possessing a general subcordate form. There is in 
fact but one muricated species, V. Dione ; V. Pa- 
phia is included in the same division, v.^hich has no 
