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Show 1880.] MR. CRAVEN ON NEW SHELLS FROM NOSSI BE. 215 d'un roux moins intense. Bee noiratre, a mandibule inferieure plus claire que dans les adultes; pattes jaunatres-pales ; iris brun-fonce. Les ceufs, trouves dans les premiers jours de juin, sont allonges et elliptiques, a surface fort polie, d'une belle couleur violette grisatre, semblable a celle du chocolat au lait. Dimensions : 54 X 38 ; 55 X 38 ; 55x37*5; 55*5x37*3; 56x37*6 mm. 2. Description of three new Species of Land and Freshwater Shells from Nossi-Be Island (N.W. Coast of Madagascar). By A L F R E D E. C R A V E N , F.R.G.S., F.G.S., F.L.S., F.Z.S., &c. [Eeceived March 1, 1880.] (Plate XXII.) To the molluscan fauna of Nossi-Be Island I have three new species to add :- ACHATINA MAMILLATA, sp. nov. (Plate XXII. fig. 8.) Shell elongated, semitransparent, very pale greenish yellow, faintly striated by the lines of growth ; apex mamillated and rounded ; spire produced ; whorls 1 1, very gradually increasing, rather convex ; aperture semilunar, labrum thin and simple; columella rather arcuate; generic fold small; suture deep and much puckered beneath, excepting round the apical whorls, where it is coarsely dentated. Dimensions:-Length 19 to 21 millims., diameter of last whorl 4*5, height of aperture 4, breadth of aperture 2*5. Locality. Nossi-Be' Island, under dead leaves in woods near the sea-shore. PUPA CAF^EICOLA, sp. nov. (Plate XXII. fig. 10.) Shell subrimate, elongated, semitransparent, rather glossy, of a pale yellowish-white colour, faintly obliquely striated, especially the last whorl; apex rounded and obtuse; whorls 7, convex, gradually increasing, the penultimate whorls being the broadest; the last whorl not descending, but straightened a short distance from the aperture; aperture irregularly semioval, armed with three teeth, viz. a thin lamelliform tooth on the paries connected with the labrum at its upper margin, a broad-based tooth on the labrum also reaching the margin, and a small tooth at the base of the columella within the aperture; columella straight, furnished far within the aperture with a lamelliform expansion ; deep depressions or pits on the exterior of the shell correspond with the teeth on the labrum and base of aperture ; labrum very slightly thickened, expanded and somewhat reflexed ; suture coarsely dentated. |