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Show 18 MR. G. F. ANGAS ON NEW AUSTRALIAN SHELLS. [Jail. 3, 20. CLATHURELLA BICOLOR, n. sp. (Plate I. fig. 20.) Shell somewhat acuminately turreted, rather solid, pale ash-colour, with the base of the last whorl chocolate-brown ; whorls 7*., rounded, somewhat angulate in the middle, longitudinally ribbed and concentrically narrowly ridged, slightly nodulous at the points of intersection ; spire acuminate, with the apex sharp and of a brown colour ; aperture small, ovate, stained above and below with brown interiorly ; outer lip thin, denticulate within and strongly variced behind ; posterior sinus broad aud rather deep. Length 3^ lines, breadth 1 line. Hab. Dredged near the " Sow and Pigs," Port Jackson (Brazier). 21. CLATHURELLA BRAZIERI, n. sp. (Plate I. fig. 21.) Shell elongately turreted, rather solid, pale brown, a little darker on the lower whorl and at the apex ; whorls 7, angulated at the upper part, longitudinally plicate and transversely finely ridged ; spire convexly acuminated; aperture elongately ovate; outer lip thin, simple within; columella arcuate; channel short, sharply recurved ; posterior sinus wide, not very deep. Length 3 lines, breadth | line. Hab. Dredged near the "Sow and Pigs" (Brazier). 22. CLATHURELLA ALBOCINCTA, n. sp. (Plate I. fig. 22.) Shell ovately fusiform, moderately solid, whitish, the last whorl stained with brown, with a broad opaque white band in the centre ; whorls 5, rounded, longitudinally ribbed with numerous regular nodulous ribs, and latticed with concentric ridges ; aperture ovate ; outer lip thickened, dentate within ; posterior sinus narrow. Length 2\ lines, breadth 1 line. Hab. Dredged near the " Sow and Pigs," Port Jackson (Brazier). 23. CLATHURELLA BILINEATA, n.sp. (Plate I. fig. 23.j Shell ovately turreted, moderately solid, pale straw-colour or light brown, nearly white around the aperture and at the base, with a narrow brown band just below the suture, and a second between the periphery and the base of the last whorl ; whorls 6, angulate at the upper part, coarsely longitudinally ribbed and transversely ridged, the interstices very finely decussately striated ; aperture acuminately ovate ; outer lip arcuate, contracted towards the base, and thickened behind ; posterior sinus very shallow. Length 2 lines, breadth | line. Hab. Dredged near the " Sow and Pigs," Port Jackson (Brazier). 24. FOSSARINA BRAZIERI, n. sp. (Plate I. fig. 24.) Shell depressedly turbinate, narrowly umbilicate, moderately solid, ashy grey, more or less blotched here and there with purplish brown; whorls 3^, irregularly spirally ridged (one at the periphery, and one near the suture being more prominent than the others) and transversely striated; sutures strongly impressed ; spire slightly elevated, |
