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Show 776 MR. W. HARPER PEASE O N T H E GENUS TRIPHORIS. [NOV. 15, 10. TRIPHORIS CYLINDRICUS. T. elongata, gracilis, cylindracea, solida ; anfractibus numerosis, triseriatim granulosis, serie mediana minore, transversim tenuissime striatis, ad basin punctulatis; canali basali brevi, recurvo, canaliposteriore apertura clausa, tubulato, subcirculari; omnino alba. Long. 12, diam. 2f mill. Hab. Ins. Apaiang. An elongate slender shell, the only one of large size, of which the posterior canal is closed and produced in tubular form. 11. TRIPHORIS GRANOSUS. T. elongato-subulata, solida; anfractibus biseriatim eequaliter granulosis, interstitiis linea granulosa cingulatis; canali basali brevi, valde recurvo; apertura subcirculari; pallide fusca, granulis albis. Long. 6, diam. 1| mill. Hab. Ins. Tahiti. 12. TRIPHORIS TUBERCULATUS. T. subulata, solida; anfractibus duodecim, triseriatim granulosis, serie mediana paulo minore, canali basali brevi, recurvo; apertura subcirculari; fusco alboque irregulariter maculata. Long. 8, diam. 2\ mill. Hab. Ins. Kauai. This is the only granulated species I have met with on which the colours are not regularly disposed. 13. TRIPHORIS ORYZA. T. abbreviato-subulata, robusta, solida; anfractibus decern, triseriatim eequaliter granulosis; canali basali brevi, recurvo; apertura subcirculari; apice acuto; lutescens, serie superiore granorum alba; basi fusco bilineata. Long. 4, diam. 1\ mill. Hab. Ins. Kauai. 14. TRIPHORIS PUSTULOSUS. T. elongata, cylindracea, solida; anfractibus tredecim, triseriatim granulosis, serie inferiore minore, longitudinaliter subcos-tatis, costis supra suturam continuis; sutura concavo-sulcata; lutescens, granis albidis, interstitiis granorum rubidis. Long. 11, diam. 2| mill. Hab. Ins. Kauai. The interstices between the granules being stained with red gives the shell a pustulated appearance. The granules follow each other in regular succession, one under the other, and connected with each other, and over the suture as well, by a slightly elevated rib. |