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Show 1869.] MR. H. ADAMS ON NEW MARINE SHELLS. 273 plici; canali mediocri, antice roseo tincta; labro intus leviter lirato. Long. 20, lat. 10 mill. Hab. Barkly Island, Mauritius (Coll. Barclay). Genus MAURITIA, H. Ad. Testa fusiformis, spira acuminata; apertura angusta, lineari, antice truncata; columella numerose plicata; labro extus incrassato, antice decurtato. MAURITIA BARCLAYI, H. Ad. (Plate XIX. figs. 5, 5a.) M. testa oblongo-fusiformi, solida, striis concentricis confertis validioribus) sculpta, lineis rufis distantibus transversis cincta, callo vitreo tenui fulvo tecta; spira brevi, subacuminata, apice acutiusculo, sutura leviter impressa; anfr. 8, subplanatis, ultimo ascendente, ^ longitudinis eequante; apertura angusta, latiore; columella, callosa, plicis parvis oblicquis ad majoribus) antice instructa, truncata, producta, basi ; labro postice angulato, margine recto, extus valde incrassato. Long. 50, lat. 15 mill. Hab. Barkly Island, Mauritius (Coll. M'Andrew). In general appearance Mauritia resembles Dibaphus, but from that genus the presence of folds on the columella distinguishes it. From Mitra it differs both in form and in the columellar plaits being much more numerous and less distinct. MARGINELLA (GLABELLA) MIRABILIS, Barcl. MS. (Plate XIX. figs. 6, 6a.) M. testa trigono-ovata, solida, polita, longitudinaliter valde plicis subtus obsoletis, albida, lilaceo nebulosa et fasciata, lividis aspersis, fascia livida angusta interrupta ad suturam peripheriam ornata; spira parum elevata, apice obtuso, sutura mediocri; anfr. 6, ultimo ascendente; apertura angusta; columella plicis 4 validis vix obliquis instructa; labro extus valde albido, maculis et liris sanguineis notato, intus crenulato. Long. 32, lat. 1 9 mill. Hab. ? (Coll. Barclay). NACELLA (CELLANA) CERNICA, Barcl. MS. (Plate XIX. figs. 7, 7a.) N. testa tenui, ovata, depresso-conica, costis obtusis radiantibus numerosis et liris elevatis concentricis confertis undulatis albida, radiis rubro-fulvis ornata; apice subcentrali, obtuso; apertura ovata; fascia interna secundum superficiem exteriorem decussata et picta, micante, submargaritacea; margine plus minusve late crenulato. Long. 39, lat. 29, alt. 10 mill. Hab. Barkly Island, Mauritius (Coll. Barclay). |
