134 



12. MiTRA RUFOCiNCTA, A. Aclams. M . testd ovato-fusiform 

 spird aperturam aquante ; anfractibus rotundis, sordide alhd, 



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

 tis obtusis, rotundis, distantibus ; interstitiis lineis impressis 

 transversis ; aperturd subdilatatd ; columelld plicis quatuor in- 

 structd; labro tenui antice dilatato. 



Hah. ? 



A small, slightly-worn specimen serves for this description, but it 

 is of peculiar form and sculpture. 



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

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

 anfractu ultimo antice et postice sulcis nonnullis transversis in- 

 structo ; aperturd oblongd, antice subdilatatd ; columelld plicis 

 quatuor ; labro simplici. 



Hub. ? 



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

 lines for sculpture. 



]\. MiTRA COMPTA, A. Adams. M. testd ovato-fusiformi ; spird 

 aperturd longiore ; anfractibus subrotundis, superne angulatis, 

 sordide albd, longitudinaliter plicatd ; transversim liratd, Kris 

 apud plicas nodulosis ; interstitiis valde et regulariter clathratis ; 

 anfractu ultimo antice angustato et reflexo ; columelld plicis quin- 

 que instructd ; labro interne sulcata, margine crenulato. 



Hab. China Seas. 



This species, remarkable for the strong cancellations between the 

 longitudinal plicae, was brought home in II. M.S. Samarang. 



15. MiTRA LiGATA, A. Adams. M. testd ovato-fusiformi ; spird 

 aperturd longiore, anfractibus planis ; castaneo-fuscd, lined unicd 

 pallida, transversd in medio anfractuum, longitudinaliter plicatd, 

 transversim subliratd ; columelld plicis quatuor ; labro simplici, 

 margine acuta. 



Hub. Pasacao, province of South Camarinas ; isle of Luzon, on 

 the sands. 



The colouring of this species is very different from the allied spe- 

 cies, and the sculpture is peculiar to many species belonging to the 

 subgenus Turris of Schumacher. 



16. MiTRA viBEX, A. Adams. M. testd ovato-fusiformi ; spird 

 aperturam <equante ; anfractibus rotundis ; fused, prupe suturas 

 palliduld, zonuld albd angustd transversd in medio anfractuum ; 

 longitudinaliter corrugato-plicatd , transversim liratd, liris apud 

 plicas nodulosis ; interstitiis longitudinaliter slriatis ; anfractu 

 ultimo angustato et antice subreflexo ; columelld plicis quatuor in- 

 structd; labro acuta. 



Hab. ? 



This species somewhat resembles armillata of Kccvc, but the cor- 

 nigated nature of tlic plicae distinguishes it. 



