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Show 1873.] NEW SPECIES O F ACHATINELLINCE. 87 This species is remarkable for the roughness of the epidermis, which is generally worn away from the front of the body-whorl near the aperture. AURICULELLA. AURICULELLA TENUIS, Sm. (Plate X. fig. 27.) B.M. Testa sinistrorsa, perelongato-conica, subperforata, tenuis, incrementi lineis leviter striata, fusco-cornea, pallida anfract. ultimi medio cincta; anfract. 8|, vix convexiusculi ; apex obtusiusculus; apertura parva; perist. levissime dilatatum; lamina parietalis ad aperturam aliquanto callosa; plica columellaris duplex, leviter reflexa, callo pertenui juncta. Long. 9 mill., diam. 4. Var. Testa fusco-cornea, concolor. In some specimens just above the suture there are some blackish dots, which may be produced by the dried-up animal within. Station. On the leaves of the ginger and other herbaceous plants in the woods. Habitat. Kalaikoa, on Wahiawa, Helemano and Kawailoa, on Oahu. Affinities. It differs from Aur. obeliscus, Pfr., in having a more turreted spire. Remarks. It is very rarely dextral. The specimen figured is from Helemano. AURICULELLA DIAPHANA, Sm. (Plate X. fig. 25.) Testa sinistrorsa, ovato-conica, pertenuis, cornea, fusco zona fusca anfract. ultimi medio obscure cincta; anfract. convexiusculi; sutura simplex ; perist. tenue, leviter dilatatum; columella vix plicata, aliquanto reflexa, rimam umbilicalem formans, callo pertenui labro juncta ; lamina parietalis tenuis. Long. 7 mill., diam. 4. Var. Testa concolor, cornea. Station. On the ki (Cordyline terminalis). Habitat. The typical forms are from Olomana and Kailua on Oahu. It is also found in Palolo, Makiki, and Kalihi. Affinities. It is like Aur. tenuis, Smith, in structure, and like Aur. auricula, Fer., in form. The latter species, however, is usually dextral, while this is almost always sinistral. Remarks. The specimen figured is from Olomana. AURICULELLA PERPUSILLA, Sm. (Plate X. fig. 26.) Testa minuta, sinistrorsa, breviter ovato-conica, perforata, cornea; anfract. 5, convexiusculi; sutura simplex; apertura subcircularis; lamina pai ietalis tenuis; perist. tenue, dilatatum ; columella haud plicata, aliquanto reflexa. Long, fere 4 mill., diam. 2|. Station. On leaves of plants in the woods. Habitat. Kahalu, on Oahu. |