136 SPECIFIC 



Specimen white, yellowish towards the beak$, 

 smooth within. 



Inhabits the Indian and American seas. 



Fig. 3. T. planata. 



Shell ovate, compressed, transversely substriate, 

 smooth, margin acute. 



Born, Mus, Cces. tab. 2. fig. 9. 



Specimen purplish red with paler concentric 

 bands, and a tinge of yellow about the beaks ; thin, 

 pellucid. 



Inhabits the English coast. 



Fig. 4. T. cornea. 



Shell orbicular, smooth, horn -colour, trans- 

 versely striate. 



Lister Conch, tab. 159. fig. 14. 



Specimen within dirty white passing into cine- 

 reous ; without blueish white, polished ; transverse 

 striae unequally deep ; covered with an olive brown 

 epidermis, which is darker in transverse bands, one 

 usually darker than the rest. Lateral teeth elon- 

 gated, inserted ; primary ones small. 



Inhabits the British coast. 



