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Show 1869.] CLASSIFICATION OF THE HELICTERINAE. 64 7 Sec. 3. Bulimella abbreviata (Rve.) = Bulimella sordida (Newc). " bacca " (Rve.). solitaria (Newc). colorata (Rve). multicolor (Pfr.). germana (Newc). This genus is restricted to the species with obtuse apex, represented by B. rosea (Swains.). They inhabit the westerly end of the island of Oahu. A short distance from their habitat several species are found, which we class under Sec. 2, not so robust in shape, with apex less obtuse, and surface rough. Sec. 3 comprises a few species still further removed from the type, being smooth, and the apex subacute. They might also with propriety be classed under the genus Achatinellastrum. Genus 4. EBURNELLA (Pse). T. solida, polita, Icevis, oblongo-ovata, plica columellari valida, torta ; labro vix incrassato ; apice obtusiusculo, aut acuto. Eburnella recta (Newc). saccata (Pfr.). undulata (Newc). Sec. 2. Eburnella casta (Newc). curta (Newc). livida (Swains.). porcellana (Newc). semicarinata (Newc). variabilis (Newc). This genus is established for a group of small, solid, polished species, resembling in their texture those of Helicter. They are of an elongate ovate form, the apex somewhat obtuse, and the columellar fold prominent and twisted; lip but slightly thickened within, its edge thin. They inhabit the westerly end of the island of Oahu. I add two species from the island of Lanai, which are more nearly allied to this genus than any other. Genus 5. P A R T U L I N A (Pfr.). Partulina, Pfr. Mon. Hel. Viv. vol. iv. 1859, p. 516 Partulina compta (Rve). dwighti (Newc). gouldi (Newc). marmorata (Gld.). proxima (Pse). Partulina rufa (Newc). splendida (Newc). tappaniana (C. B. Ad.). tessellata (Newc). virgulata (Migh.). Sec. 2. crassa (Newc) dolium (Pfr.). grisea (Newc). The above genus is confined to the islands of Maui and Molokai. |
