| OCR Text |
Show 258 MR. G. B. SOWERBY ON NEW SHELLS. [Apr. 28, neo fasciata, inter fascias fusco angulalim et undatim strigata, ad dorsum castaneo saturatiore et magis suffusopicta; spira elongata; anfractibus 12 circa, quorum 7 apicalibus subrotundis longitudinaliter costatis, spiraliter inter costas striatis, 3 ad 4 ultimis leevi-bus, angulatis, ultimo in canalem caudalem attenuatum valide re-trorsus torluosum terminante; columella leevigata, arcuata, labio albo, late expanso, alato, ad canalem anticum emarginato, prope canalem unilobato, inter lobum et alam sinu maxima emarginato, ala leevigata, rectiuscula, incrassata, in lobum superne elevata, turn profunde emarginata, ad anfractum ultimum elevata. Hab. Ceylon. This very magnificent shell has at first sight the appearance of a gigantic -S. vittatus, being similarly marked and of a similar general form. In that species, however, the whorls of the spire are sulcated close to the suture, and the slightly winged outer lip is striated and bent inwards at the upper angle, showing nothing like the smooth broad-lobed wing seen in our S. mirabilis. Our shell is further characterized by a very large sinus, between the lower part of the wing and the terminal lobe of the outer lip next to the canal, which is curiously curved backwards. The specimen is now in the possession of M r . G. B. Sowerby, jun. MlTRA 1NTERSCULPTA. M . testa attenuata, alba, flammis longitudinalibus rubro-fuscispicta, costellis spiralibus angulatis basi crenulatis subdistantibus et liris minutis interstitialibus crenulatis cincta; ultimo anfractu oblongo; spira breviuscula; anfractibus 6, moderate convexis. Hab. Mauritius. Mus. Taylor. MITRA PR/ETEXTA. M . testa oblongo-ovata, eequaliter liris longitudinalibus crebris et costellis spiralibus cancellata, albido-subcecrulea, zonis fuscatis tribus distantibus margine punctatis et maculis interstitialibus distantibus majoribus ornata, anfractu ultimo spiram longitudine eequante ; spira producta ; anfractibus 10, convexis,prope suturam rotundis prominentibus ; apertura fumeo fusca, intus lirata. Hab. ? Mus. Taylor. MITRA CORBICULA. M . testa breviuscula, turrita, costellis subrugosis spiralibus et liris irregularibus, frequenter duplicatis cancellata, albida seu pallide fulvo-rubescente, ad unguium anfractuum distanter nigro ocellata, ad medium anfractus ultimi fascia frequenter bipunctata cincta, infra medium subirregulariter punctata ; spira elongata ; anfractibus angulatis, anfractu ultimo brevi. Hab. Mauritius. Mus. Taylor. This species resembles M. rugosa-a Tankervillian shell, believed |
