Zoological Society. 49 



good condition, but it appears to be distinct from any species already 

 described. 



3. MiTRA STRAMiNEA, A. Adanis. M. testd oblong o-fusiformi, 

 stramined ; anfractibvs planulatis, liris transversis t^iigulosis, in- 

 terstitiis cajicellatis, suturd subcanaliculatd ; aperturd oblongd, 

 antice subproductd ; columelld plicis quatuor, basi subrecurvatd ; 

 labro intus Icevi. 



Hub. ? 



An oblong, transversely-ridged species, rather faintly cancellated 

 between the interstices. 



4. MiTRA iNsiGNis, A. Adams. M. testd ovato-acuminatd ; spird 

 acutd, Icevi, nitidd, albidd ; onfractibus plants, fascia angustd albo 



fuscoque articulatd, ornatd ; anfractu ultimo antice transversim 

 striata ; columelld sinuatd, biplicatd, antice incurvatd. 

 Hab. Rains Island (J/r. Ince). 



This is a very peculiar form, reminduig one almost of the genus 

 Pudonella of Gray. 



5. MiTRA L^vis, A. Adams. M. testd oblong o-fusiformi, apice 

 acuta, Icevi, nitidd, albidd; anfractibus planis, supronis cancel- 

 latis, ultimo fascia lata transversa, rufescenti ornato ; columelld 

 plicis quatuor, supremis magnis imbricatis. 



Hab. Zanzibar. 



A smooth O/u'ff-shaped species, with a polished surface, and a red- 

 brown band blending into the white of the last whorl ; the plates of 

 the columella are imbricate. 



6. MiTRA TiGRTNA, A. Adanis. M. testd oblongo-ovatd ; spird 

 crassiusculd, apice mucronato, rufo, albo strigosd ; anfractibus 

 planiusculis, transversim subsulcatis ; columelld plicis quinque ; 

 labro intus rufo. 



Hab. Philippines. 



Several specimens of this species, all agreeing in form, were col- 

 lected by Mr. Cuming ; but one only retained the natural colour of 

 the surface. 



7. MiTRA TiARELLA, A. Adams. M. testd oblongo-ovatd, fused, 

 nodulis albis, ad suturas coronatd, longitudinaliter subplicatd, 

 transversim liratd, inter stitiis valde punctatis ; columelld plicis 

 quatuor ; labro margine cremtlato. 



Hub. Island of Ticao, sandy mud, 6 fathoms. 

 This small, brown-coloured species is beautifully crowiied, in adult 

 specimens, with a diadem of white nodules at the suture of the whorls. 



8. MiTRA PiGRA, A. Adams. M. testd oblongo-fusiformi, ob- 

 scuro-fuscd, lineis pallidulis transversis prope suturas, albidd, 

 maculis rufis, ornatd ; Icevi ; spird acuminata ; anfractibus sep- 

 tern, planulatis ; aperturd subdilatatd, intus albd ; columelld pli- 

 cis quatuor, albis, obliquis, instructd, antice subintortd. 



Hab. Australia. 

 Ann. i^ Mag. N. Hist. Ser.2. Fo/.xii. 4 



