PLATE XXIV. 



Tellina crassa, admodum leviter striata, intus violacea. List. H. 



Conch, tab. 375. fig. 216. — 376. — 218. 219. 

 Donax denticulata. Purple. Penn. Br. Zool. No. 46. 



This is a very elegant and remarkable species : the annexed Plate 

 exhibits five of its most singular varieties. The young shells are 

 sometimes quite white, or white faintly marked with brown, red or 

 violet ; the old shells are of a deep violet without, and variously 

 marked with the same on the outside. Very common on the western 

 coasts of England, and also on those of Ireland and Scotland. 



