INDEX TO THE DISCOVERY INVESTIGATIONS MOLLUSCA 



73 



GASTROPODA 



Schizotrochus euglyptus (Pelseneer, 1903). Palmer Archipelago and South Georia 



Patelloida ceciliana (Orbigny, 1841). Falkland Is.- 



Nacella mytilina (Helbling, 1779). Cape Horn 



Patinigera delicatissima (Strebel, 1907). Falkland Is 



Patinigera polaris (Hombron & Jacquinot 1841). South Georgia to Palmer Archipelago 



Patinigera polaris concinna (Strebel, 1908). South Georgia 



Lepeta coppingeri (Smith, 1881). Falkland Is. and Ross Sea 



Fissurella (Balboaina) picta (Gmelin, 1791). Falkland Is. 



Fissurella (Balboaina) oriens Sowerby, 1834. Falkland Is. 



Megatebennus patagonicus Strebel, 1907. Falkland Is. . 



Puncturella conica (d'Orbigny, 1841). Falkland Is., South Georgia, South Shetland Is. 



Parmaphorella melvilli (Thiele, 191 2). Tierra del Fuego and North of Falkland Is 



Calliostoma coppingeri (Smith, 1880). Falkland Is. to Patagonia 



Calliostoma falklandicum Strebel, 1908. Falkland Is. and Patagonia 



Calliostoma modestulum Strebel, 1908. Falkland Is. and Patagonia . 



Calliostoma nordenskjoldi Strebel, 1908. Patagonia 



Calliostoma sp. Patagonia ...... 



\*Venustatrochus georgianus n.g. and n.sp. South Georgia . 

 ■\Falsimargarita gemma (Smith, 1915). South Shetland Is. 



Falsimargarita iris (Smith, 1915). Falkland Is. 



Photinula coerulescens (King & Broderip, 1830-31). Falkland Is. and Patagonia 

 ■\Photinastoma taeniata (Wood, 1828). Falkland Is. and Patagonia . 



Photinastoma taeniata nivea (Cooper & Preston, 1910). Falkland Is. 



Margarella antarctica (Lamy, 1905). South Shetland Is. to Palmer Archipelago 

 *Margarella bonvetia n.sp. Bouvet I. 



Margarella expansa (Sowerby, 1838). Falkland Is. 



* Margarella jason n.sp. South Georgia . 



* Margarella porcellana n.sp. Marion I. . 

 Margarella steineni (Strebel, 1905). South Georgia 



Margarella violacea (King &'Broderip, 1830-31). Falkland Is. and Patagonia 

 Margarella (Promargarita) achilles (Strebel, 1908). South Georgia 

 Margarella (Promargarita) tropidophoroides (Strebel, 1908). South Georgia 



*Margarella (Promargarita) tropidophoroides obsoleta n.subsp. South Georgia 



Submargarita impervia Strebel, 1908. South Georgia .... 

 ■\Antimargarita dulcis (Smith, 1907). South Shetland Is. and Ross Sea. . 



Antimargarita thielei (Hedley, 1916). Ross Sea 



\*Tropidomarga biangulata n.gen and n.sp. South Georgia and South Shetland Is. 

 *Solariella kempi n.sp. Falkland Is. to Patagonia 



Cirsonella extrema Thiele, 19 12. Ross Sea . . .... 



Brookida calypso (Melvill & Standen, 1912). Falkland Is. . 



Brookula decussata (Pelseneer, 1903). Palmer Archipelago . 



*Brookula pfefferi n.sp. South Georgia 



*Brookida strebeli n.sp. South Georgia 



Homalopoma cunninghami (Smith, 1881). Tierra del Fuego . 

 \*Leptocollonia thielei n.gen. and n.sp. South Georgia and Palmer Archipelago 



Laevilitorina caliginosa (Gould, 1848). South Georgia .... 



Laevilitorina claviformis Preston, 1916. Palmer Archipelago . 

 ^Laevilitorina (Corneolitorina) coriacea Melvill & Standen, 1907. South Orkney Is. 

 \Laevilacunaria bransfieldensis (Preston, 1916). South Shetland Is. . 

 \Laevilacunaria (Pellilacunella) bennetti (Preston, 1916). South Shetland Is 



Pellilitorina pellita (Martens, 1885). South Georgia and South Orkney Is. 



and B 



and Marion 



ouvet 



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