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Show 1870.] MR. W. HARPER PEASE ON THE GENUS TRIPHORIS. 775 et tenuissime striatis; canali basali brevi, recurvo; apertura fere circulari; rubida, serie inferiore granorum cerea. Long. 8, diam. 2 | mill. Hab. Ins. Kauai. The striking contrast between the circle of waxen-coloured beads on a dark red renders the above species conspicuous and easily recognizable. 6. TRIPHORIS PERFECTUS. T. turrita, tenuiuscula, nitida; anfractibus decern, cingulis duabus granorum ornatis, serie inferiore majore, moniliformi; sutura sulcata; canali basali oblique recurvo; canali posteriore tubulato, elongato, clauso, repando; apertura circulari; alba, serie superiore granorum rufescenti-fusca. Long. 4, diam. 1| mill. Hab. Ins. Kauai. I have attached the above name to this species, as it represents the genus fully developed. T. mirabilis (C. B. Ad.) and T. mirificus (Desh.) are of the same type. 7. TRIPHORIS PUNCTATUS. T. elongato-turrita, solida; anfractibus quatuordecim, tricari-natis, carina mediana multo minore, interstitiis valde punctatis sutura sulcata, leevi; apertura subcirculari; alba, pallide fusco et rosaceo irregulariter maculata. Long. 9, diam. 2| mill. Hab. Ins. Annaa. The above may be recognized by the deep punctures between the spiral keels, and smooth sutures. 8. TRIPHORIS COSTATUS. T. subulata, solida, transversim costata, costis cequalibus, regula-ribus, contiguis, subgranosis, planulatis ; sutura incerta; canali brevi, recurvo; apertura subcirculari; basi albida, spira cinereo-fusca. Long. 8, diam. 2 | mill. Hab. Ins. Annaa. This species is made up of a series of equal-sized ribs, closely contiguous, rather plane, and somewhat granose; I have not been able to determine where the suture runs. 9. TRIPHORIS ROBUSTUS. T. abbreviato-subulata, solida; anfractibus decern, biseriatim eequaliter granosis, longitudinaliter tenui-striatis; interstitiis suturaque linea subgranulosa spiraliter cingulatis ; canali basali brevi, recurvo; apertura subcirculari; seriebus granorum albido, fusco et fiavo maculatis ; sutura lata, rosacea. Long. 6, diam. 2\ mill. Hab. Ins. Makaimo. PROC. ZOOL. Soc-1870, No. LII. |