54 Zoological Society, 



30. MiTRA RUTiLA, A. Adams. M. testd oblongo-fusiformi, acu- 

 minatd, aurantiacd, maculis albis sparsis ornatd, fasciis pallidis 

 transversis prope suturas, suturis maculis aurantiacis maculatis ; 

 spird productd, acutd ; anfractibus septem, tra?isversim lircitd ; 

 anfractu ultimo liris antice distinctioribus ; aperturd dilatatd; colu- 

 melld plicis quatuor ; labro acuto, antice crenato. 



Hub. ? 



31. MiTRA DELiCATA, A. Adams. M . testd ovato-fusiformi ; spird 

 aperturd longiore ; anfractibus planis; suturd subcanaliculatd, sor- 

 dide albd, fasciis transversis duabus pallidis ; longitudinaliter 

 plicatd, plicis angustis, acutis, crenulatis, interstitiis transversim 

 clathratis, anfractu ultimo antice angustato et recurvato ; colu- 

 melld plicis quatuor ; labro margine acuto, crenulato. 



Hab. Cape York, 8 fathoms (Jukes). 



A species of great delicacy, both of colour and sculpture. 



32. MiTRA RUFESCENS, A. Adams. M. testd ovato-fusiformi ; 

 spird acuminatd, sordide albd, rufo variegatd, cingillis transversis , 

 acutis, subdistantibus, liris duabus intermediis, interstitiis longi- 

 tudinaliter valde sulcatis, sulcis subdistantibus ; columelld antice 

 tortuosd, plicis quatuor obliquis instructd ; labro interne sulcata, 

 margine crenato. 



Hab. China Seas. 



This species, obtained during the voyage of H.M.S. Samarang, 

 partakes of the same kind of sculpture as M. annulata and others, 

 for which Swainson has formed a subgenus. 



33. MiTRA FORMOSA, A, Adams. M. testd oblongo-fusiformi, albo 

 rufoque eleganter variegatd; spird acutd ; anfractibus S, rotundis, 

 ad suturas subangulatis, cingillis transversis nodulosis ornatd, 

 nodulis subquadratis, in seriebus regularibus ; aperturd spird bre- 

 viore ; columelld plicis quatuor ; labro acuto, margine crenato. 



Hab. Marquesas (liohr). 



A very handsome species, entirely covered v/ith close-set granules 

 arranged in transverse rows. 



34. MiTRA SACERDOTALis, A. Adams. M. testd oblongo-fusi- 

 formi; spird acuminatd ; a?ifractibus novem, subplanulatis ; fulvd, 

 lineis fuscis transversis ornatd, prope suturas albidd, rufo macu- 

 losd ; leevi, sulcis distantibus, transversis insculptd ; anfractu ulti- 

 mo basi recm'vatd ; aperturd spirce dimidium aquante, recurvatd 

 et antice truncatd ; columelld plicis quatuor, obliquis ; labro albo, 

 acuto, antice rotundato. 



Hab. Australia. 



A fine species of a peculiar character, both as regards form, colour 

 and sculpture. 



35. MiTRA MACROSPIRA, A. Adams. M. testd pyramidaliturritd; 

 spird valde productd, albidd, maculis rufis irregularibus oi'natd ; 

 anfractibus planis , longitudinaliter costellatd, costellis Iccvibus svb- 

 confertis, interstitiis clathrato-punctatis ; anfractu ultimo antice 



