54 Zoological Society. 



30. MiTRA RUTiLA, A. Adanis. M. testd ohlongo-fusiformi, acu- 

 minatd, aurantiacd, maculis albis sparsis ornatd, fasciis pallidis 

 transversis prope suturas, suturis maculis aurantincis maculatis ; 

 spird productd, acutd ; anfractibus sepiem, transversim liratd ; 

 anfractu ultimo liris antice distinctioribus ; aperturd dilatatd; colu- 

 melld plicis quatuor ; labro acuta, antice crenato. 



Hab. ? 



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

 aperturd longiore ; anfractibus plants ; suturd subcanaliculatd, sor- 

 dide albd, fasciis transversis duabus pallidis ; longitudinaliter 



■ plicatd, plicis a7igustis, acutis, crenulatis, interstitiis transversim 

 clathratis, anfractu ultimo antice angustato et recurvato ; colu- 

 melld plicis quatuor ; labro margine acuta, crenulato. 



Hab. Cape York, 8 fathoms (Jukes). 



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



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

 spird acuminata, 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 Swaiuson has formed a subgenus. 



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

 rufoque eleganter variegatd ; spird acutd ; anfractibus 8, ratundis, 

 ad suturas subangulatis, cingillis transversis nodulosis ornatd, 

 nodulis subquadratis, in seriebus regularibus ; aperturd spird bre- 

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



Hab. Marquesas {Rohr). 



A very handsome species, entirely covered with close-set granules 

 arranged in transverse rows. 



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

 formi ; spird acuminatd ; anfractibus novem, subplanulatis ; fulvd, 

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

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

 mo basi recurvatd ; aperturd spira dimidium aquante, recurvatd 

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

 acuta, 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 pyramidali -turritd ; 

 spird valde productd, albidd, maculis rufis irregularibus ornatd; 

 anfractibus planis, longitudinaliter costellatd, castellis Icevibus sub- 

 cm fertis, interstitiis clathrato-punctatis ; anfractu ultima antice 



