374 Quarterly Journal of Conchology. 



St. Helena has i8 species, 2 of the HeHceshave been referred 

 to the Polynesian genus Endodonta by some authors, ^vhile there 

 are 5 AcJiatiruc. 



We trust that the able and learned doctor will continue from 

 time to time the good work he has begun and of which this is the 

 first part. 



We may refer to the fact that the author of this valuable 



paper has recently been elected the first of ten honorary members 



of the Conchological Society of Great Britain and Ireland on 



account of his eminent services to the Science. 



J. W. T. 



On the variation in sculpture of the genus Nassa. — 



By F. P. Marratt, May, 1876, Svo., pp. 8. 



In this paper the author points out the improbability of the 

 fixity and distinctness of species, as held almost universally by 

 Conchologists and others some years ago. The great accessions 

 made during the last few years to our knowledge of the variation 

 and distribution of species have completely revolutionized our 

 ideas on many questions relating to the MoUusca. 



The variations as exhibited by the Nassce. are here fully 

 discussed, the author's views favoring Nassa semicostata, N. 

 dlstoria, N. lacJvymosa, and N. Jacksoniana being regarded as 

 mere varieties of Nassa nionile, Kiener. N'. legula, and N'. coronida 

 are simply different forms of one species. N. canaliculata and 

 N lens are identical, only differing in having open or closed 

 sutures. 



N. plicaia, N. pulla, and N. suhifera are varieties of N". 

 arcularia. 



N. lentiginosa^ N. punctata, N. velicata, N. compta and N. 

 luctuosa also are in all probability merely varietal forms. 



