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DESCRIPTION OF A NEW SPECIES OF MITRA (M. 

 BALDWINII) FROM THE HAWAIIAN ISLANDS. 



By JAMES COSMO MELVILL, M.A., F.L.S. 

 Mitpa (StPigatella) baldwinii, n. sp. 



M. testa ovato-fusiformi, nitida, perlsevi albida, 

 solidiuscula, anfractibus ad decern, in speciminibus 

 nostris decoUatis, gradatulis, apud suturas impressis, 

 supernis arete longitudinaliter, lasvicostatis, interstitiis 

 obscure spiraliter striatis, tribus ultimis laevibus, fla- 

 minis longitudinalibus brunneo-castaneis conspicuis 

 depictis, ultimo anfractu caeteros magnopere superante 

 versus basim spiraliter multilivato, apertura oblonga, 

 I intus striata, cinerea, labro incrassato, sinuoso, Isevi, 

 columella albescente, quadriplicata. 



Long. 24. Lat. 11 mm. 



Hal). — Ad insulus Hawaiienses (Baldwin.). 



This very elegant Mitra is conspicuous amongst its congeners for 

 its extremely smooth surface, delicate apppearance, longitudinal chest- 

 nut flame-like markings on a white ground, and for its neatly graduated 

 whorls, the uppermost four or five being very closely and smoothly 

 longitudinally ribbed, the narrow interstices between the costje also 

 smooth. 



A member of the typical section of the subgenus StrujateUa, its 

 nearest affinities lie with paupercula, L., retusa, Lam., and zebra, Lam. 

 ( = virgata, Reeve), but all these are coarse shells, and will be seen at 

 once to differ widely when compared with the description given of 

 AI. hakhnnii, in many salient points, notably in the sculpture of the 

 upper whorls. 



Four examples alone, so far, would appear to have reached this 

 country. Of these, one has been for a considerable period housed in 

 our National Collection at South Kensington, unnamed, but this is 

 in very imperfect condition. 



A second was presented by Mr. Baldwin to Mr. Thomas Rogers 

 of Manchester, some little time back from Honolulu Harbour, also 

 being in an uncharacteristic state, but this was followed, quite recently, 

 by two beautiful and almost perfect examples, precisely similar both 

 in size and colouration, consigned also to Mr. Rogers, who kindly 

 handed them to me for identification. It is curious that both these 



