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Show 1869.] CLASSIFICATION OF THE HELICTERINAE. 649 Genus 9. NEWCOMBIA (Pfr.). T. sinistrorsa, subimperforata, elongata, costata, plicata, aut plica columellari nulla; perist. simplici, subrecto. Newcombia cumingi (Newc). Newcombia plicata (Migh.). cinnamomea (Pfr.). philippiana (Pfr.). newcombiana (Pfr.). sulcata (Pfr.). Sec. 2. hutchinsonii (Pse). obscura (Newc) = " mcesta" (Newc). The species of this genus are easily distinguished by their slender elongate shape and simple columella. I add, in Sec 2, two species, similar in shape, but covered with a coarse epidermis, and furnished with a slight columellar fold ; one is dextral. Genus 10. A U R I C U L E L L A (Pfr.). Auriculella, Pfeiff. Proc. Zool. Soc. 1855, p. 1 ; Mon. Hel. Viv. 1859, vol. iv. p. 569. T. subperforata vel imperforata, oblongo-conica aut elongata; pariete aperturali lamella spiraliter intrante munito; plica supera dentiformi vel obsoleta; perist. expansiusculo. Auriculella auricula (Fer.). Auriculella obeliscus (Pfr.). ambusta (Pse.). pulchra (Pse). cerea (Pfr.). petitiana (Pfr.). chamissoi (Pfr.). • pumicata (Migh.). expansa (Pse.). triplicata (Pse). larida (Pfr.). uniplicata (Pse.). This genus is the most aberrant in form of the family. The species are small and distinguished by a lamina on the wall of the aperture, in addition to the usual columellar fold. The young have in some cases been mistaken for Tornatellinee. Genus 11. AMASTRA (H. & A. Ad.). Amastra, Adams, Gen. Mollusca, 1858, vol. ii, p. 137. T. plerumque dextrorsa, epidermide munita; plica columellari valida, sublamellaformi; perist. intus incrassato, interdum Amastra anthonii (Newc). Amastra reticulata (Newc). farcimen (Pfr.). similaris (Pse). inflata (Pfr.). solida (Pse.). irregularis (Pfr.). sphcerica (Pse.). nigra (Newc). tristis (Fer.). nucleofa (Gld.). textilis (Fer.). obesa (Newc). ventulus (Fer.). porphyrostoma (Pse). biplicata (Newc) = rugulosa (Pse). "deshayesii" (Morelet). |
