. Fig. H. Dentition of Trochidae (Calliostomatinae). (15) Calliostoma modestulum Strebel, Falkland Is., St. WS 80. (16) Vennsta- trochus georgianus and , South Georgia, St. 42. (17) Livonia pica Linn., West Indies (Thiele, 1924, fig. n). (18) Calliostoma coppingeri (Smith), Falkland Is., StWS. 852. (19) Calliostoma granulans Born., Mediterranean (Troschel & Thiele, 1879, pi. 24, fig. 18). (20) Calliostoma sublaevis chuni Martens, off Somaliland (Martens & Thiele, 1903, pi. 8, fig. 42). (21) Calliostoma conulus Linn., Messina (Troschel & Thiele, 1879, pi. 24, fig. 16). (22

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. Fig. H. Dentition of Trochidae (Calliostomatinae). (15) Calliostoma modestulum Strebel, Falkland Is., St. WS 80. (16) Vennsta- trochus georgianus and , South Georgia, St. 42. (17) Livonia pica Linn., West Indies (Thiele, 1924, fig. n). (18) Calliostoma coppingeri (Smith), Falkland Is., StWS. 852. (19) Calliostoma granulans Born., Mediterranean (Troschel & Thiele, 1879, pi. 24, fig. 18). (20) Calliostoma sublaevis chuni Martens, off Somaliland (Martens & Thiele, 1903, pi. 8, fig. 42). (21) Calliostoma conulus Linn., Messina (Troschel & Thiele, 1879, pi. 24, fig. 16). (22) Calliostoma nordenskjoldi Strebel, Patagonia, St. WS. 776. (23) Falsimargarita gemma (Smith), off Oates Land (Eales, 1923, fig. 6). (24) Photinula coerulescens (King & Broderip), Falkland Is., St. WS 869. (25) Photinastoma taeniata (Wood), Falkland Is., St. 56.

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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti