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Show 112 ME. E. A. SMITH ON LAND-SHELLS EROM [Eeb. 5, Diam. maj. 2*5 millim., alt. 2'25. Hab. Gomanton, N.E. Borneo, and Palawan. The concentric stria? on the base are visible under a simple lens, but the spiral sculpture on the upper surface is discernible only under a microscope. 35. SITALA BAEITENSIS, Smith. Sitala baritensis, Smith, Journ. Linn. Soc, Zool. 1893, vol. xxiv. p. 343, pi. xxv. fig. 3. Hab. Barit Mountain, N . Borneo, and Palawan. The genus Sitala has not previously been recorded from Palawan. The specimens from this island are precisely similar to the Bornean examples. 36. SITALA AMUSSITATA. (Plate III. fig. 13.) Testa perforata, conica, saturate olivaceo-fusca, nitens ; spira elata, convexe conoidea, ad apicem pallidior, obtusa ; anfractus 6, convexi, lente accrescentes, striis minutis paucis spiralibus hie illic sculpti, ultimus ad peripheriam rotundatus, infra medium concentrice tenuissime striatus ; apertura parva, lunata ; perist. tenue, margine columellari leviter incrassato, pallido, reflexo umbilicus angustissimus, pallidus. Diam. maj. 4#25 millim., min. 4, alt. 2>\. Hab. Busau, West Sarawak. A rich olive-brown glossy species, with a high spire and convex whorls. 37. SITALA IN^EQUISCULPTA. (Plate III. fig. 14.) Testa conica, angustissime perforata, fusco-cornea, supra parum nitida, infra polita; spira elata, conoidea, ad apicem paulo obtusa ; anfractus 6, convexi, lente accrescentes, sutura profunda sejuncti, liris tenuissimis spiralibus 4-5 et lineis incrementi obliquis arcuatis elevatis cancellati, ultimus liris spiralibus (inflma ad peripheriam sita) ductus, infra medium concentrice tenuissime striatus, lineis incrementi levibus sculpties ; apertura parva, sublunata ; peristoma tenue, margine columellari paulum incrassato, pallide livido. Diam. maj. 3^ millim., min. 3j, alt. 3|. Hab. Mount Babong, West Sarawak. The upper surface being cancellated and the lower smooth and glossy, this species is readily distinguishable from the other Bornean species of the genus Sitala. The oblique curved lines of growth are elevated, but closer together thau the spiral threads. 38. SITALA INEANTILIS. (Plate III. fig. 15.) Testa minuta, conico-subglobosa, angustissime perforata, cornea, pellucida, polita ; spira conoidea, ad apicem obtusa ; anfractus 5, convexiusculi, lente accrescentes, infra suturam anguste mar-ginati, Iceves, ultimus depresse globosus ; apertura oblique lunata |
