50 Zoological Society. 



This species partakes somewliat of the character of M. sacerdo- 

 talis. 



9. MiTRA LUCTUOSA, A. AcUims. M. testa oblong o-ftisiformi, 

 obscuro-fuscd, fascid unicd pallidd transversd ornatd ; spird 

 acuta, an/ractibus planulatis, transversim liratd ,• interstitiis 

 valde clathralo-punctatis ; aperturd oblongo-ovatd ; spird bre- 

 viori ; labio crassiusculo ; columelld plicis quatuor salientibus. 



Hab. China Seas. 



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



10. MiTRA ixscvLPTA, A. Adams. M. testd ovato-fusiformi ; 

 spird brevi, acutd ; aperturd breviori ; an/ractibus planulatis, 

 pallide fused, maculis rufis, longitudinalibus, variegatd ; cingillis 

 integris, acutis, prominentibus, eequidistantibus ; liris intermediis 

 submonili/ormibus ; interstitiis longitudinaliter valde sulcatis ; 

 aperturd elongatd ; columelld plicis tribus ; labro acvto margine 

 crenulato. 



Hab. Ceylon (Dr. Gardner). 



This species also belongs to the same group as M. cingulata. 



11. MiTRA EXARATA, A. Adauis. M. testd ovato-fusiformi ; spird 

 aperturam eequante ; anfractibns subrotundis ; suturd subcanalicu- 

 latd, olivaced, fasciis duabus pallidis transversis, longitudinaliter 

 costatd ; costellis cequalibus, subdistantibus ; interstitiis lineis in- 

 sculptis, profundis, transversis ; columelld plicis tribus, validis, 

 instructd. 



Hab. Bais, island of Xegros, coarse sand, 7 fathoms. 

 The most characteristic feature of this species is the sculpture be- 

 tween the ribSj consisting of deep, eugraA ed, transverse lines. 



12. MiTRA RVFOCiNCTA, A. Adams. M. testd ovato-fusiformi ; 

 spird aperturam cequante ; anfractibus rotnndis, sordide albd, 

 fascid transversd lata rufo-fuscd ; longitudinaliter costatd, cos- 



tis obtusis, rotnndis, distantibus ; interstitiis lineis impressis 

 transversis ; aperturd subdilatatd ; columelld plicis quatuor in- 

 structd ; labro tenui antice dilatato. 



Hab. ? 



A small, shghtly-wom specimen serves for this description, but it 

 is of peculiar form and sculpture. 



13. MiTRA NiTiDA, A. Adauis. M. testd ovato-fusiformi ; spird 

 aperturd breviori ; anfractibus subrotundis, liEvi, nitidd, badid, 

 anfractu ultimo antice et postice sulcis nonnullis t)-ansversis in- 

 sti-ucto ; aperturd oblongd, antice subdilatatd ; columelld plicis 

 quatuor; labro simplici. 



Hab. ? 



A small, brown, shining species, with only a few transverse spiral 

 lines for sculpture. 



14. MiTRA coMPT.\, A. Adams. M. testd ovato-fusiformi ; spird 

 aperturd longiore ; anfractibus subrotundis, svpern}' angulatis. 



