o u 3 



is C. pcrsica Melvill and indeed I do not think they are separable. We have two 

 specimens of C. persica and both have the upper part of the spire not quite so pointed as in 

 your shells, otherwise I can find no diiterence". As the nuclear whorls are so often more or 

 less eroded, this difference may be of no great importance. Other differences I found with 

 the quoted figure are that part of the Siboga-specimens are considerably larger (till 2 i Mill. 

 in length, instead of 15) that the last whorl is often fnuch more ventricose, the canal commonly 

 more slender and not so straight ; as however many of these characters are slightly variable 

 in the Siboga specimens, I think it wil! be fit to accept Mr. Smith's views, as he was the 

 only person, able to make direct comparison. The species has also some resemblance with 

 C. Jeffreysi, but Mr. Smith says it is quite unlike and even a less typical specimen, with more 

 equal lirae, sent by Mr. Melvill for comparison, is very different in its particulars of sculpture. 



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