. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 196 PROTOCONCHS AND OPERCULA. Fig. N. Protoconchs (all to uniform scale). (102) Ataxocerithium pullum (Philippi), Falkland Is., St. WS 225. (103) Tromina tricarinata , Clarence I., St. 170. (104) Tromina bella , Falkland Is., St. WS 817. (105) Cavineptunea monstrosa and , South Georgia, St. 159. (106) Proneptunea fenestrata , South Georgia, St. 140. (107) Trophon gever- sianus (Pallas), Falkland Is. (108) Zeatrophon ambiguus (Philippi), New Zealand. (109) Xymene plebejus
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 196 PROTOCONCHS AND OPERCULA. Fig. N. Protoconchs (all to uniform scale). (102) Ataxocerithium pullum (Philippi), Falkland Is., St. WS 225. (103) Tromina tricarinata , Clarence I., St. 170. (104) Tromina bella , Falkland Is., St. WS 817. (105) Cavineptunea monstrosa and , South Georgia, St. 159. (106) Proneptunea fenestrata , South Georgia, St. 140. (107) Trophon gever- sianus (Pallas), Falkland Is. (108) Zeatrophon ambiguus (Philippi), New Zealand. (109) Xymene plebejus (Hutton), New Zealand, (no) Xymenopsis liratus (Gould), Falkland Is., St. 52. (in) Trophon (Fuegotrophon) pallidus (Broderip), Staten I., St. WS 88. (112) Leucosyrinx falklandica , Falkland Is., St. WS 781. (113) Leucosyrinx paragenota , Burdwood Bank, St. 652. (114) Lorabela notophila (Strebel), South Georgia, St. WS 27. (115) Belalora thielei and , Falkland Is., St. WS801. (116) Pleurotomella? ohlini(Strebel), Falkland Is. (117)Plenrotomellasimillima(Thiele), Ross Sea, St. 1660. (118) Eumetadrillia fuegiensis (Smith), off Patagonia, St. WS 787. (119) Typhlodaphne purissima (Strebel) South Georgia, St. 159. Opercula (Figs. 120, 121, 123-126, 130 all to uniform scale. Fig. 122 = §, and Fig. 127= x 2) (120) Perissodonta georgiana Strebel, South Georgia, St. WS 62. (121) Pelicaria vermis (Martyn), New Zealand (122) Struthiolaria papulosa (Martyn), New Zealand. (123) Probuccinum delicatulum , South Georgia, St. 159 (124) Proneptunea fenestrata , South Georgia, St. 140. (125) Notoficula problematica , Falkland Is., St. WS 766 (126) Tromina tricarinata , Clarence I., St. 170. (127) Falsimohnia albozonata (Watson), South Georgia, St. 149 (128) Pfefferia elata Strebel, South Georgia. (129) Chlanidota signeyana , South Orkney Is. (size relationship between operculum and aperture represented by crossed lines). (130) Typhlodaphne n
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