Zoological Society. 53 



interstitiis longitudinaliter valdl clatJiratis, ornatd ; anfractn ul- 

 timo antice producto et recurvato ; columella plicis tribus. 



Hah. ? 



This species belongs to that group in which the whorls are encir- 

 cled with transverse ridges. 



25. MiTRA RETICULATA, A. Adams. M. testd ovato-fusiformi ; 

 spird aperturd breviori ; anfractibus subrotundis ; albd ; cingulis 

 transversis, eequidistantibus, acutis, crenulalis, sulcis obliquis 

 longitttdinaUbus decussatis, ornatd ; columelld plicis quatuor ; /a- 

 bro intus sulcata. 



Hab. Port Essington, 7 fathoms, sandy mud {Jukes). 

 Remarkable for the acute, crenated, transverse ridges which give 

 the surface a reticulated appearance. 



26. MiTRA ASPERULATA, A. Adams. M. testd oblongo-fusifomii, 

 pallide ru/o-fuscd, ad svturas ulbidd, longitudinaliter sulcatd, 

 transversim liratd, liris nodulis, subacutis, asperulatis ; spird pro- 

 ductd ; anfractibus sex, subrotimdis ; aperturd spir<e dimidium 

 tequante, antice abrupte truncatd ; columelld plicis tribus ; labro 

 acuto. 



Hab. Australia. 



The transverse ridges are set with subacute nodules, which give a 

 rough appearance to the surface. 



27. MiTRA MiRABiLis. A. Adams. M. testd fusiformi; spird 

 acuminata, aperturd longiori ; anfractibus novem, planulatis, su- 

 perne angulatis; albd, maculis nifis triangularibus, etpunctis trans- 

 verso-elongatis, ntfescentibvs , ornatd ; longitudinaliter plicatd, 

 plicis obtusis, regularibus, distantibus, tiodosis ; nodis postich 

 prominentibus ; cingulis transversis nodulosis, obtusis, elevatis, 

 instnictd ; anfractu ultimo in medio angustato ; antice productd 

 et subreflexd ; aperturd elongatd ; columelld plicis quatuor ; labro 

 postice angulato, in medio inflexo, intus sulcata, margine crenulato. 



Hab. Socotra. 



28. MiTRA ALBiNA, A. Adams. M. testd oblongo -fusiformi, albd; 

 spird conicd, longitudinaliter plicatd ; anfractibus subrotundatis, 

 liris transversis ornatis ; anfractu ultimo Icevi, postice subplicato, 

 antice sulcis transversis punctatis ornato ; columelld plicis quin- 

 que ; aperturd oblongo-lineari ; labia subcalloso ; labro acuto.. 



Hab. Batangas, Isle of Luzon, on the reefs. 



This Mitra is perfectly white, and of a very peculiar form ; Mr. 

 Cuming possesses but a single specimen. 



29. Mitra amcena, A. Adams. M. testd oblongo-fusiformi, albd, 

 maculis rufis variegatd ; spird acuminatd ; anfractibus octo, sub- 

 rotundis, carinulis transversis. leevibus, elevatis, rufo-fusco artictt- 

 latis, lird intermedid crenvlatd, interstitiis eleganter longitudina- 

 liter clathratis ; aperturd angustd ; columelld plicis quinque ; 

 labro tenui, acuto. 



Hab. Red Sea. 



This elegant species belongs to the annulated group. 



