TELL1NA-TELLEK. 157 



SOL EN Radiatus* 



RADIATED RAZOR SHELL. 



Specific Character. Shell oval, smooth, thin, 

 brittle, striated concentrically ; when stript of 

 its green epidermis, it appears both within and 

 without of a delicate violet colour, with from 

 two to four white longitudinal rays, which 

 become broader towards the margin ; hinge with 

 two teeth in each valve, and a strong white 

 depressed rib extending somewhat obliquely 

 from the hinge towards the margin ; shell about 

 an inch, or an inch and quarter long, and from 

 three to four inches broad. 



It is found in the Indian Ocean. 



Genus. TELLINA.f P^m/, Tettina. 



TELLEN. 



Generic Character. Shell bivalve, equivalve, 

 inequilateral ; shape either ovate and thickish, 

 ovate and compressed, or suborbicular ; the 

 area often compressed, having a flexuous plait or 

 fold, and its margin curved inwards, so that it is 

 * Plate VII. fig. 5. t Plate VII. fig. 6, 7, 8, 9. 



