DESCRIPTION. 123 



Specimen white, marked with bluish flesh-co- 

 loured streaks and spots, striated transversely in 

 such a manner as that towards the anterior side 

 the shell appears divided into two triangular com- 

 partments following the curvature of the lower 

 margin ; covered with a yellowish olive transparent 

 epidermis. 



Inhabits the English coast. 



Fig. 5. S. radiatus. 



Shell oblong oval, straight, smooth, with an 

 internal 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 radiata. 



Fig. 2. TellixNa rugosa. 



Shell ovate, with transverse undulated wrinkles 



