XXVI APPENDIX. 



2094. MITRxV SUCCINCTA, Swainson. 



RI. testa ovato-fusiformi, alba fusco-varifl; costis 

 Mausversis carinatis, interstitiis scriebiiiapunctis, 

 spira gracili, breviorc ; labio crciiato. 

 Shell ovatc-fiisiforin, with transverse carinated 

 strifB, the interstices with a double series of punc- 

 tured dots, white varied with brown j spire slender, 

 rather short, lip crenated. 



Obs. The shape and habit of this shell is inter- 

 mediate between M. grdiiatiiia, \jii\\\. and M. textn- 

 rata, having the more slender form of the first, and 

 the shorter spire of the second. The wliole sliell is 

 crossed by elevated, well defined, and soniewliat ca- 

 rinated stria?, or rather ribs, sufficiently apart to ad- 

 nut of tu(i series of linear punctures, divided by an 

 indented line, between each rib. The spire is slen- 

 der, and shorter than the aperture; and the outer lip 

 obtusely crenated. The j^round <-oI<iur of the shell 

 is wiilte, marked Ity broad and soniewliat interrupted 

 shades of brown, disposed lonji^itudinaily ; pillar 

 5 plaited. In another sjiecimcn the brown shades 

 assumed tlu; appearance of bead-like dots on the 

 ribs. 



•JODJ. iVIlTRA '^ILCATA, Swainson. 



RI. test:\ parvfi, siibconiformi, transversim sulcata, 



alba griseo-varia ; fauce fusca ; labio crenato. 



Shell small, subconical, transversely sulcated, white 



varied with i;'-ey, throat brown ; lip crenated. 



Obs. In shape nearly approachiiii^ to M.carinata 



(Sw. 111. of Zool. pi. '2. ined.) but its shorter spire 



Ejives it something tlic appearance of a Confelix. 



The whole shell is crossed by deeply sulcated stri;e, 



or more properly grooves; the interstices Ijcing 



convex on the body whorl, but rather carinated on 



the shoulder and spire, whi(;h gives to these parts an 



angulated appearance ; the base is contracted, and 



