DESCRIPTION. 135 



ments following the curvature of the lower margin ; 

 covered with a yellowish olive transparent epi- 

 dermis. 



Inhabits the English coast. 



Fig. 5. S. radio ius. 



Shell oblong oval, straight, smooth, with an in- 

 ternal rib from the hinge to the base. 



Lister Conch, tab. 422. fig. 266. 



Specimen violet with four white rays, extremely 

 thin and brittle, rib white, strong ; hinge in both 

 valves callous ; teeth in both valves bifid. 



Inhabits the East Indies. 



PLATE V. 

 Fig. 1. Hinge of Tellina rflc?za/a, 



Fig. 2. Tellina rugosa. 



Shell ovate, with transverse undulated wrinkles ; 

 hinge with two lateral teeth ; one primary tooth 

 in the right valve and two in the left bifid. 



Bwn. Mus. Cces, tab. 2. fig. 3, 4. 



