Zoological Society. ^ 



' '^' interstitiis longitudinaliter valde clathratis, ornatd; anfractu ul- 

 " timo antice producto et recurvato ; columelld 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 apertvrd breviori ; anfractibus subrotvndis ; albd ; cingulis 

 transversis, cequidistantibus, acutis, crenulatis, sulcis obliquis 

 long itudinali bus decussatis, ornatd ; columelld plicis qxiatuor ; la- 

 i 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 oblong o-fusiformi, 

 , pallide rufo-fuscd, ad suturas albidd, longitudinaliter sulcatd, 

 transversim liratd, liris nodulis, subacutis, aspei'ulatis ; spird pro- 

 ductd ; anfractibus sex, subrotundis ; aperturd spirts dimidium 

 aquante, 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 

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

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

 verso-elongatis, rufescentibus, ornatd; longitudinaliter plicatd, 

 plicis obtusis, regularibus, distantibus, nodosis ; nodis postici 

 prominentibus ; cingulis transversis nodulosis, obtusis, elevatis, 

 instructd ; anfractu ultimo in medio angustato ; antice productd 

 et subrefiexd ; aperturd elongatd ; columelld plicis quatuor ; labro 

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



Hab. Socotra. 



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

 spird conicd, longitudinaliter plicatd ; anfractibus subrotundatis, 

 liris transversis omatis ; anfractu ultimo Itevi, 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 ado, sub- 

 rotundis, carinulis transversis, Itevibus, elevatis, rufo-fusco articu- 

 latis, lird intermedid crenulatd, interstitiis eleganter longitudina- 

 liter clathratis ; aperturd angustd ; columelld plicis quinque ; 

 labro tenui, acuto. 



Hab. Red Sea. 



This elegant species belongs to the annulated group. 



