56 Zoological Society. 



spird productd, acuminatd ; anfractibus convexiusculis ; albidd, 

 sparsim rufo-fusco pictd, longitudinaliler costatd, costis nodulosis, 

 interstitiis dathrato-punctatis ; aperturd brevi, antice angustatd, 

 basi productd, tortuosd et recurvd ; columella quadripUcatd. 



Hab. Marquesas. 



A delicate, small, pale species, with scattered red-brown blotches, 

 and with the interstices between the ribs clathrate-punctate. 



42. MiTRA JuKESii, A. Adams. M. testd ovato-fusiformi ; spird 

 acutd, aperturce dimidium cequante ; anfractibus planis, prope su- 

 turas angulatis; albidd, fasciis castaneis transversis ornatd; truns- 

 versim sulcatd, sulcis, prope suturas, pro/undioribus ; longitudina- 

 liter plicatd, plicis obtusis, distantibus, prope suturas nodulosis ; 

 columelld plicis quatuor instructd ; labro intus Icevi. 



Hab. North Australia {Jukes). 



This species is intermediate between M. cor rug at a and M. vulpe- 

 cula, but is distinct from both. 



43. MiTRA CRENiPLiCATA, A. Adams. M. testd ovato-fusiformi; 

 spird acuminatd; anfractibus planulatis ; brunned, longitudinaliter 

 plicatd, plicis crenatis tenuibus ; transversim liratd, liris cequali- 

 bus, confertis, nodulosis ad plicas ; aperturd spiram eequante ; 

 labio postice calloso, antice dilatato ; columelld plicis quatuor in- 

 structd; labro intus dentato-lirato, margine incrassato. 



Hab. ? 



This species belongs to the group named by Mr. Gray Zierliana. 



44. MiTRA CRENiLABRis, A. Adams. M. testd fvsiformi ; spird 

 aperturam aquante ; anfractibus planis ; fulvd, longitudinaliter 

 substriatd, transversim sulcatd; aperturd oblongd, antice dilatatd ; 

 columelld plicis quatuor, antice incurvatd ; labro, in medio, recto, 

 margine crenato et incrassato. 



Hab. ? 



This Mitra resembles in many particulars M.fulva, Reeve, but in 

 all the specimens I have seen the outer lip is thin and smooth in that 

 species. 



45. Mitra castanea, A. Adams. M. testd ovato-fusiformi ; 

 spird productd ; anfractibus rotundatis ; castaned, nitidd, trans- 

 versim punctato-striatd ; aperturd quam spira breviore, antice dila- 

 tatd; columelld plicis quinque. 



Hab. ? 



This species most closely resembles M. badia, Reeve, but the 

 whorls are rounded, and it differs in other particulars. 



46. Mitra dichrom a, A.Adams. M .testd ovato-fusif orm.i ; spird 

 acuminatd; anfractibus planis ; suturd canaliculatd, antice castaneo- 



fuscd, postice albidd ; longitudinaliter substriatd, transversim sul- 

 catd, sulcis antice profvndis , aperturd antice dilatatd; columelld 

 plicis quinque instructd, antice productd ; labro intus lirato, mar- 

 gine crenulato. 

 Hab. ? 



