CONCHOLOGY. 



particulars the resemblance is less obvious, the body is sometimes 

 curved as in the shell before us and sometimes straight, but the 

 edges of the valves are parallel, and the shell itself pellucid : the 

 figure in Chemnitz is less than half the size of our shell. This inha- 

 bits the seas of Timor and the Nicobar Islands. 



It should be observed in conclusion that there is a specimen of 

 our species among the Hammer Shells in the British Museum, the 

 habitat of which is indicated by the word " Amboina : " it is much 

 smaller than our shell. Besides this we have lately seen another 

 example from New Holland, of a growth still larger than the shell 

 we have delineated. 



We have entered thus minutely into the analogies of this shell 

 from an apprehension we might otherwise in this instance submit as 

 a new species an object that had been previously described. The 

 result of our enquiry will tend to shew that if the species has not 

 remained entirely unnoticed, it has never been described with much 

 precision. 



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