220 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



NOTES ON A THIRD COLLECTION OF MAEINE SHELLS FROM 

 THE ANDAMAN ISLANDS, WITH DESCRIPTIONS OF THREE 

 NEW SPECIES OF MITRA. 



By J. Cosmo Melvill, M.A., F.L.S., etc., and E. E. Sykes, B.A., 



P.Z.S., etc. 



Bead 9th December, 1898. 



Since the appearance of onr former papers on this subject,* we have 

 heard with the greatest regret of the sudden death (in April or May, 

 1898) of Mr. G. H. Booley, of Port Blair, to whom we have been 

 indebted for the carefully selected examples that form the foundation 

 of this and our preceding contributions towards a MoUuscan Fauna of 

 the Andamans. 



Had he lived, it was his intention to forward certain generic and 

 specific fonns at one special time, and thus, as much as possible, keep 

 to one Order till worked out. In two or three years we should in 

 this way have been able to give a very full geographical summary of 

 the marine molluscan fauna of these prolific islands. Imperfect, 

 therefore, though the researches are now, unfortunately, compelled 

 to remain, there can be no donbt that they will prove of some service 

 to the future malacological geographer, who would essay a complete 

 catalogue of the Andamanese fauna. 



In the present paper, no less than three new species of Mitra are 

 added to our lists, and two marked varieties of known species of Naasa 

 and Natica respectively have been thought worthy of differentiation 

 and figures. 



As before, species that have been recorded by Mr. Smith are dis- 

 tinguished by an asterisk. 



1. Plexjrotoma VAEiEGATA, Kien. Allied to jP. ^(^^n'wa. Lam., already 

 recorded from these islands ; but less acutely keeled, and with wider 

 canal. Eeported from Japan, the East Indies, and Ceylon, but not 

 very abundant anywhere. 



2. Aqitilltjs [=Teiton] pileaeis, L. Fine examples. An abundant 

 Eastern species. 



3. AauiLLus GALLiNAGo, Eecve. Also widely distributed, from the 

 Philippines south-westward. 



4. Nassa (Niotha) gemmtjIiAta, Lam. Large specimens, typical. 

 Its range also extends from the Philippines both south-westward 

 and south eastward. 



I Proc. Make. Soc, vol. ii, p. 164, and voL iii, p. 35. 



