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Show 1887.] MOLLUSKS OF THE VITI ISLANDS. 313 p. 25, 1873, p. 107 (var. rotundata); Pease, Proc. Zool. Soc. 1871, P- 476 ; Paetel, Cat. Conch, p. 125 (musica in err.). This variable species is abundant beneath decaying vegetation in the lowlands near the sea-shore, and is generally diffused throughout the group. It is also common in similar stations in the Tonga and Samoa Islands. Prof. Mousson's var. rotundata was obtained at the low coral-islands of the Ellis group. The shape varies from depressed globose to sublenticular, and in size it varies from 3 to 5 millim. in diameter. The usual colour is white, corneous, or pale yellowish horn-colour, with radiating reddish-chestnut, more or less zigzagged or undulating stripes; it is rarely unicolor, and sometimes light chestnut. The periphery is rounded or subangulated, and the peristome slightly expanded. ' H. oceanica, Pease, inhabiting the Kingsmill group, is probably a variety of Pi. musiva. 9. HELICINA ARTICULATA, Pfeiffer. Helicina articulata, Pfeiffer, Proc. Zool. Soc. 1854, p. 53 ; Mon. Pneum. ii. p. 191 ; Malak. Blat. 1854, p. 103. A few examples found beneath decaying leaves near the sea-shore, on the west end of Vanua Levu. Pfeiffer mentions "Tanna, New Hebrides," as the habitat of H. articulata. Very closely related to the depressed subangulated forms of H. musiva, and the colour and markings are nearly or quite similar in the two species. The two articulated white and chestnut bands at the suture and periphery are not constant. The filocarinated body-whorl is its most prominent character. Diam. 5-6 millim. 10. HELICINA POHLIANA, sp. nov. Helicina miniata, " Lesson" (not of Lesson in Voy. Coquille), Museum Godeffroy, 1885. Shell solid, depressedly-conoid, smooth, shining, fulvous or luteous, with very faint oblique striae and distant irregular microscopical impressed spiral lines; spire convexly conoid; whorls 5, flatly convex, last one obtusely carinate ; keel white, compressed beneath ; aperture small, diagonal, semioval; peristome very thick, labiate within ; basal callus white or pale yellowish. Viti Levu. I received this species from the Museum Godeffroy, labelled " H. miniata, Lesson." Lesson's species is peculiar to the island of Bolabola, one of the Society group. Its solid texture, yellow colour, obtuse white keel, and thick obtuse peristome will readily distinguish it from any other Viti species. 11. HELICINA INCISA, Mousson. Helicina incisa, Mousson, MS., Museum Godeffroy, 1885. Shell minute, depressed-conoid, very faintly striated by lines of |