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Show 1867.] MR. H. ADAMS ON NEW MAURITIAN SHELLS. 303 For this new species and many other fine objects I am indebted to Mr. S. White, of Adelaide, South Australia, who procured them in the interior of that country. 7. Descriptions of N e w Species of Shells collected by Geoffrey Nevill, Esq., at Mauritius. By H E N R Y A D A M S , F.L.S. (Plate XIX.) VOLVARIA (VOLVARINA) PUSILLA, H. Ad. (Pl. XIX. fig. 1.) V. testa fusiformi, pallida; spira elevata, apice obtusiuscula ; anfr. 5, convexiusculis, ultimo antice attenuato, postice paulum ascendente ; columella quadruplicata ; apertura angusta ; labro incrassato, intus dentato. Long. 5, diam. 2\ mill. Hab. Port Louis Harbour, Mauritius. This small species of the genus Volvaria has much the appearance of V. neglecta, Sow.; but the outer lip is strongly denticulated, while that of V. neglecta is smooth. MACROCHLAMYS MINIMA, H. Ad. (Pl. XIX. fig. 2.) M . testa subperforata, depressa, discoidea, tenui, vix striatula, pellucida, nitida ; spira planiuscula, sutura profunda ; anfr. 4, convexis, ultimo non descendente, basi convexo; apertura vix obliqua, lunari; perist. simplici, acuto, margine columellari superne reflexiusculo. Diam. 1^, alt. | mill. Hab. Near Port Louis, Mauritius. Although this species is so minute, it appears to be adult, and is therefore deserving of record. MACROCHLAMYS PERLUCIDA, H. Ad. (Pl. XIX. fig. 3.) M . testa anguste umbilicata, depressa, tenui, leevigata, pellucida, nitida; spira brevissime conoidea, sutura marginata; anfr. 5\, convexiusculis, arete convolutis, ultimo vix descendente, peripheria rotundato, basi medio impresso; apertura obliqua, lunari; perist. simplici, recto, margine columellari superne reflexiusculo. Diam. 6, alt. 4 mill. Hab. Peter Botte, Grand Bassin, Trou-aux-Cerfs, Mauritius. " The animal of this species presents a very pretty appearance, the mantle being of a bright-yellow colour spotted with black, and the foot bright yellow, while the tentacles are entirely black."-G. Nevill. STYLODONTA (EREPTA) RUFOCINCTA, H. Ad. (Pl. XIX. fig. 4.) S. testa vix perforata, conoideo-lenticulari, solidula, superne confertim arcuato-striata, pallide rufa, fascia rufa supra carinam alteraque suturali ornata ; spira parum elevata, apice obtusa, |