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Show 294 . MR. E. A. SMITH ON T H E [Apr. 1, TURBO (COLLONIA) RUBRICINCTUS, Mighels, var. Turbo rubricinctus, Mighels, Proc. Bost. Soc. Nat. Hist. 1845, vol. ii. p. 22. Leptothyra rubrilineata, Garrett; Martens, Donum Bismarki-anum, p. 48, pi. ii. fig. 15. Turbo (Collonia) rubricinctus, Sowerby, Thes. Conch, vol. p. 212, pi. 13. fig. 157. Collonia rubrilineata, Pease, MS., Sowerby, I. c. Collonia multistriata, Pease, MS., Sowerby, /. c. Hab. Sandwich Islands. None of the specimens from the Sandwich Islands, which I have seen, appear to be quite as large as those from St. Helena. The former have a rosy apex to the spire, whilst in the latter it is pale. Dr. von Martens (Don. Bism. p. 48) considers this species the same as Collonia verruca, Gould. The difference in size and colour at once distinguishes them. Some of the St. Helena specimens are coloured like the type-forms, whilst others are reddish brown, with a few pale interruptions on the spiral ridges. TURBO (COLLONIA) ADMISSUS. (Plate XXII. fig. 4.) Testa minuta, anguste umbilicata, conico-globosa, alba, radiatim rufo-fusco lineata vel fiammiilatn., punctis rufis minutis tessellata ; anfractus 5, superne declives, dein angulati, angulum carinati, liris tenuibus paucis cincti, ultimus medium subanqulatus, carina circa umbilicum instructus; apertura subrotundata, longit. totius -j ada?quans; columella, arcuata, alba, leviter refiexa. Longit. 2\ millim., diam. maj. 2. The generic position of this pretty minute species is at present somewhat uncertain, as the operculum is unknown. On account of its small size and non-nacreous interior, I believe it to belong to Collonia. One specimen is of a pinkish tint, and all show a more or less distinct darkish zone on the lower surface of the bodv-whorl. The minute dots fall upon the fine spiral lirae. PHASIANELLA TESSELLATA, C. B. Adams. Phasianella tessellata, C. B. Adams, Contrib. Conch, p. 67. Hab. Jamaica. The coloration of this species is variable, but the " fine, rather distant, parallel, spiral lines of brown, which descend more rapidly than the whorls," appear to be quite constant. In young fresh specimens more or less spiral striation is discernible. LlOTIA ARENULA. (Plate XXIV. fig. 6.) Testa minuta, depresse globosa, anguste umbilicata, alba; 3-3|, superne subplani, in medio rotunde angulati, microscopice spiraliter striati, radiatim plicati, transversim-que lirati, ultimus carinis vel liris spiralibus sex, obliquis numerosis cancellatus; sutura profunda, canalicu- |