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APPENDIX 22 in Shallow-water Rissoidae of the genera Alvania Risso 1826 Haurakia Iredale 1915 Parashiela Laseron 1956 Simulamerelina Ponder 1985 and Subestea Cotton 1944 Gastropoda Caenogastropoda Rissooidea from French Polynesia with the description of a new deep-water genus

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APPENDIX 22. — Measurements of teleoconch and protoconch of Subestea moruroa n. sp. in mm, with range, mean and standard deviation: 1, holotype, Tuamotu, Moruroa Atoll; 2, 3, Tuamotu, Anaa Atoll; 4-7, Tuamotu, Nukutavake. Teleoconch1234567Min-maxMeanStdHeight1.961.571.671.651.701.671.421.42-1.961.660.162Width1.020.880.900.920.850.930.820.82-1.020.900.064Height/Width ratio1.921.781.861.792.001.801.731.73-2.001.840.093Aperture height0.720.630.630.650.650.630.570.57-0.720.640.044Height/aperture height ratio2.722.492.652.542.632.652.492.49-2.722.590.089No. whorls3.502.753.003.103.203.002.752.75-3.503.040.262No. axial ribs on last whorls9109121312119-1310.91.57No. spiral cords on last whorls15(9)n. m.n. m.15(8)16(9)18(8)15(9)15-18(8-9)15.8 (8.6)1.30 (0.55)(above aperture)Start33n. m.3333330Protoconch1234567Min-maxMeanStdHeight0.2370.3120.3250.2500.2830.3000.2670.237-0.3250.2820.033Diameter of nucleus0.1120.1250.1450.1000.1170.1270.1170.100-0.1450.1200.014Diameter of first half whorl0.2120.2250.2200.2200.2170.2000.2170.200-0.2250.2160.008Maximun diameter0.2870.3250.3620.3120.2830.3000.3170.283-0.3620.3120.027No. whorls1.501.501.401.351.351.351.401.35-1.501.410.067Paucispiralyesyesyesyesyesyesyesyes––
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2025-04-05
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