on the Genus Cermatia, S^c. 309 



I discovered at Triiicomalee a most beautiful species of crab 

 allied to Nephrops, but distinct in generic characters from it, which 

 1 have not yet had time to particularly examine, but you shall 

 have it when I can get leisure to make the necessary sketches. 

 In the mean time, adieu, 



Your's, very truly, 



R. Templeton. 

 Colombo. 



N.B. It may interest some of your conchological acquaintances 

 to know that Avkula radiata of Leach is the far ftmied pearl 

 oyster of Ceylon ; I have got plenty of all ages destined for the 

 Belfast Museum. I send you a sketch of the fry which roves 

 about near the surface of the sea ; it in scarcely any respect resem- 

 bles the full grown shell. Vide Nat. Misc. vol. i. pi. 43. 



