Abstract
New Scissurellidae and Anatomidae from the geographic and political Americas are described, with many long-standing misidentifications being corrected, and some comparisons to described species complementing the contribution. Sinezona kayae n. sp., previously mis-identified as the South African Sin. insignis, and Sin. hawaiiensis n. sp. without a selenizone, are described from Hawaii. Sinezona carolarum n. sp. is added to the Panamic province with a more depressed shell than the more common Sin. rimuloides (Carpenter, 1865), and a proportionally shorter selenizone. Coronadoa demisispira n. sp. from the Panamic and northeastern Pacific provinces is the third species in the genus, living sympatrically in the southern range of C. simonsae Bartsch, 1946. The new species is characterized by a shell with lower profile and a wider umbilicus. Anatoma alternatisculpta n. sp. from the Caribbean is most similar to A. proxima (Dall, 1927), but has conspicuously different sculpture on shoulder and base. Anatoma plicatazona n. sp. from the Caribbean has markedly upturned keels of the selenizone. Anatoma disciformis (Golikov & Sirenko, 1980) is reported from Alaska and illustrated for the first time by SEM. Thieleella kelseyi (Dall, 1905) is resurrected for what has previously been misidentified as the European Anatoma crispata (Fleming, 1828) in the northeastern Pacific, with a neotype designated, as the holotype is missing. Thieleella peruviana n. sp. from Peru is similar to T. kelseyi but has a taller shell and differs in the morphology of lateral tooth 5 of the radula. Thieleella bathypacifica n. sp. from the Panamic province is a deep-water species (2500 m), and known from a single specimen only. The species shows a marked angulation on teleoconch I at the spiral cord in the position of the selenizone; additionally it has a radula with marginal teeth showing a distinct posterior food groove. The bodies of two species (T. kelseyi, T. peruviana) were examined by SEM. An accessory cephalic tentacle between the anterior most epipodial tentacle and the eye stalk was encountered. The epipodial sense organ is recognized for the first time in Anatomidae, and the presence of bursicles on the gill is confirmed.References
Bandel, K. (1998) Scissurellidae als Modell für die Variationsbreite einer natürlichen Einheit der Schlitzbandschnecken (Mollusca, Archaeogastropoda). Mitteilungen des Geologisch-Paläontologischen Instituts der Universität Hamburg, 81, 1–120.
Bartsch, P. (1915) Report on the Turton Collection of South African marine mollusks, with additional notes on other South African shells contained in the USNM. United States National Museum Bulletin, 91, 174–175, pl. 24.
Bretos, M., Tesorieri, I. & Alvarez, L. (1983) The biology of Fissurella maxima Sowerby (Mollusca: Archaeogastropoda) in northern Chile. 2. Notes on its reproduction. Biological Bulletin, 165, 559–568.
Burch, J.Q. (1946a) Check List of West North American Marine Mollusks. Burch, Los Angeles. 30 pp.
Burch, J.Q. (1946b) [No title]. Minutes of the Conchological Club of Southern California, 58, 1–27.
Dall, W.H. (1905). Some new species of mollusks from California. The Nautilus, 18, 123–125.
Dall, W.H. (1921b) Descriptions of new species of Mollusca from the North Pacific Ocean in the collection of the United States National Museum. Proceedings of the United States National Museum, 56, 293–371.
Dall, W.H. (1921) Summary of the marine shellbearing mollusks of the northwest coast of America, from San Diego, California, to the Polar Sea, mostly contained in the collection of the United States National Museum, with illustration of hitherto unfigured species. United States National Museum Bulletin, 112, 1–217, pls, 1–22.
Draper, B. (1973) Minute shells, part 3. Tabulata, 6(2), 8–12.
Geiger, D.L. (2003) Phylogenetic assessment of characters proposed for the generic classification of Recent Scissurellidae (Gastropoda: Vetigastropoda) with a description of one new genus and six new species from Easter Island and Australia. Molluscan Research, 23, 21–83.
Geiger, D.L. (2006a) A new blind Anatoma species from the bathyal of the northeastern Pacific (Vetigastropoda: Anatomidae). Molluscan Research, 28, 108–112.
Geiger, D.L. (2006b) Sasakiconcha elegantissima new genus and species (Vetigastropoda: Anatomidae?) with disjointly coiled base. The Nautilus, 120, 45–51.
Geiger, D.L. (2006c) Eight new species of Scissurellidae and Anatomidae (Mollusca: Gastropoda: Vetigastropoda) from around the world, with discussion of two new senior synonyms. Zootaxa, 1128, 1–33.
Geiger, D.L. (2008) Monographing micromolluscs: a case studies on Scissurellidae s.l. (Vetigastropoda). In: Geiger, D.L. & Ruthensteiner, B. (Editors). Micromolluscs: Methodological Challenges - Exciting Results. Zoosymposia, 1, 133–146.
Geiger, D.L. (2008) New species of scissurellids from the Austral Islands, French Polynesia, and beyond (Mollusca: Gastropoda: Vetigastropoda: Scissurellidae, Anatomidae, Larocheidae). The Nautilus, 122, 185–200.
Geiger, D.L. (2009) A new species of Depressizona and the family rank of Depressizonidae. Zootaxa, 2095, 57–59.
Geiger, D.L. & Jansen, P. (2004a) Revision of the Australian species of Anatomidae (Gastropoda: Vetigastropoda). Zootaxa, 435, 1–35.
Geiger, D.L. & Jansen, P. (2004b) New species of Australian Scissurellidae (Mollusca: Gastropoda: Vetigastropoda) with remarks on Australian and Indo-Malayan species. Zootaxa, 714, 1–72.
Geiger, D.L., Marshall, B.A., Ponder, W.F., Sasaki, T. & Warén, A. (2007) Techniques for collecting, handling, and preparing small molluscan specimens. Molluscan Research, 27 (Special Issue), 1–50.
Geiger, D.L., Nützel, A. & Sasaki, T. (2008) Vetigastropoda. Phylogeny and Evolution of the Mollusca (W. Ponder & D. Lindberg, eds). University of California Press, Berkeley, pp. 297–330.
Geiger, D.L. & Sasaki, T. (2008) Four new species of Anatomidae (Mollusca: Vetigastropoda) from the Indian Ocean (Reunion, Mayotte) and Australia, with notes on a novel radular type for the family. In: Geiger, D.L. & Ruthensteiner, B. (Editors). Micromolluscs: Methodological Challenges - Exciting Results. Zoosymposia, 1, 247–264.
Geiger, D.L. & Sasaki, T. (2009) New Scissurellidae and Anatomidae from Manazuru, Sagami Bay, and Okinawa, Japan (Mollusca: Gastropoda: Vetigastropoda). Molluscan Research, 29, 1–16.
Golikov, A.N., Sirenko, B.I., Gulbin, V.V. & Chaban, E.M. (2001) Checklist of the shell-bearing gastropods of the northwestern Pacific. Ruthenica, 11, 153–173.
Golikov, A.N. & Sirenko, B.I. (1980). New species of the subclass Scutibranchia from the Sea of Japan. Academy of Sciences of the USSR, Zoological Institute, Explorations of the fauna of the Seas, 25, 105–108.
Herbert, D.G. (1986) A revision of the southern African Scissurellidae (Mollusca: Gastropoda: Prosobranchia). Annals of the Natal Museum, 16, 9–29.
Hickman, C.S. & McLean J.H. 1990. Systematic revision and suprageneric classification of trochacean gastropods. Science Series Natural History Museum of Los Angeles County, 35, 1–169.
Hooker, S.H. & Creese, R.G. (1995) Reproduction of Paua, Haliotis iris Gmelin, 1791 (Mollusca, Gastropoda), in north-eastern New Zealand. Marine and Freshwater Research, 46, 617–622.
Kano, Y, Chikyu E. & A. Warén (2009) Morphological, ecological and molecular characterization of the enigmatic planispiral snail genus Adeuomphalus (Vetigastropoda: Seguenzoidea). Journal of Molluscan Studies, 75, 397–418.
Kantor, I.Yu. & Sysoev, A.V. (2005) Catalogue of molluscs of Russia and adjacent countries. KMK Scientific Press Ltd., Moscow. 627 pp.
Kantor, I.Yu. & Sysoev, A.V. (2006) Marine and Brackish Water Gastropoda of Russia and Adjacent Countries: An illustrated Catalogue. KMK Scientific Press Ltd., Moscow. 372 pp., 140 pls.
Kaiser, K.L. (2009) Les mollusques. Clipperton, Environement et Biodiversité d’un Microcosm Océanique (L. Charpy, ed.). Muséum national d’Histore naturelle, Paris, pp. 217–234.
Kay, A. (1979) Hawaiian Marine Shells. Reef and Shore Fauna of Hawaii, Section 4: Mollusca. Bishop Museum Press, Honolulu. 653 pp.
Keen, A.M. (1937) An Abridged Check List and Bibilography of West North American Marine Mollusca. Stanford University Press, Stanford. 87 pp.
Lozouet, P. (1986) Les Gastropods Prosobranches de l’Oligocène supérieur du Bassin de l’Adour (Systématique, Paléoenvironnements, Paléoclimatologie, Paléobiogeographie), Diploma Thesis, École Pratique des Hautes Études, Paris, 475 pp., 34 pls.
McLean, J.H. (1966) West American Prosobranch Gastropoda: Superfamilies Patellacea, Pleurotomariacea and Fissurellacea. Dissertation Stanford University, Stanford. 245 pp., 7 pls.
McLean, J.H. (1967) West American Scissurellidae. The Veliger, 9, 404–410.
McLean, J.H. (1970) New species of tropical eastern Pacific Gastropoda. Malacological Review, 2, 115–130.
McLean, J.H. (1984) New species of northeast Pacific archaeogastropods. The Veliger, 26, 233–239.
McLean, J.H. (1996) Gastropoda, the Prosobranchia. In: Scott, P.H., Blake, J.A. & Lissner, A.L. (Eds), Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel, vol. 9. Santa Barbara Museum of Natural History, Santa Barbara, pp. i–v, 1–160.
Morris, T.E. & Hickman, C.S. (1981) A method for artificially protruding gastropod radulae and a new model of radula function. The Veliger, 24, 85–89.
Oldroyd, I.S. (1924) Marine shells of Puget Sound and vicinity. Publications Puget Sound Biological Station of the University of Washington, 4, 1–272.
Oldroyd, I.S. (1927) The Marine Shells of the West Coast of North America vol. 2, part 3. Stanford University Press, Stanford. 339 pp., pls. 73–108.
Quinn, J.F. Jr. (1983) A revision of the Seguenziacea Verrill, 1884 (Gastropoda: Prosobranchia). I. Summary and evaluation of the superfamily. Proceedings of the Biological Society of Washington, 96, 725–757.
Rolán, E. (1996) A new species of Sinezona (Gastropoda, Scissurellidae) from the Caribbean Sea. Iberus, 14, 109–112.
Rolán, E. & Luque, A.A. (1994) A new species of Sinezona (Gastropoda, Scissurellidae) from the Caribbean Sea. Iberus, 12, 1–5.
Sasaki, T. 1998. Comparative anatomy and phylogeny of the Recent Archaeogastropoda (Mollusca: Gastropoda). The University Museum, University of Tokyo, Bulletin, 38, 1–224.
Sasaki, T., Geiger, D.L. & Okutani, T. (in press) A new species of Anatoma (Vetigastropoda: Anatomidae) from a hydrothermal vent field in Myojin Knoll Caldera, Izu-Ogasawara Arc, Japan. The Veliger.
Smith, E.A. (1910) On South African marine Mollusca with description of new species. Annals of the Natal Museum, 2, 175–220, pls. 7–8.
Talmadge, R.R. (1966) Notes on the Mollusca of Prince William Sound, Alaska. The Veliger, 9, 82–86.
Thiele, J. (1912) Scissurelliden und Fissurelliden. In: Kobelt, H.C. & Küster, W. (eds), Systematisches Conchylien-Cabinet von Martini und Chemnitz, Bauer & Raspe, Nürnberg, pp. 1–34, pls. 1–4.
Wells, F.E. & Mulvay, P. (1995) Good and bad fishing areas for Haliotis laevigata - a comparison of population parameters. Marine and Freshwater Research, 46, 591–598.
Zelaya, D.G. & Geiger, D.L. (2007) Species of Scissurellidae and Anatomidae from Sub-Antarctic and Antarctic waters (Gastropoda: Vetigastropoda). Malacologia, 49, 393–443.
Zelaya, D.G. & Geiger, D.L. (2008) The identity of the enigmatic Scissurella dalli Bartsch, 1903 (Gastropoda: Scissurellidae). In: Geiger, D.L. & B. Ruthensteiner (Editors). Micromolluscs: Methodological Challenges—Exciting Results. Zoosymposia, 1, 265–270.