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Show 1881.] SOCOTRAN LAND-SHELLS. 805 6. B U L I M I N U S ( A C H A T I N E L L O I D E S ) B A L F O U R I , var. Three specimens are mottled spirally below with pale umber and white, above transversely ; and the apical whorls have dark dashes near the suture at regular intervals. Longest specimen:- Major diam. 0*44, alt. axis 0*87, alt. apert. 0*47 inch. „ 11*3, „ 22*5, „ 12*4 millim. Most tumid specimen :- Major diam. 0*37, alt. axis 0*65, alt. apert. 0*34 inc^. „ „ 9*6, „ 17*0, „ 9*0 milnm. [From the plain in the vicinity of Kadhoop village on the north side of the island.-B. B.~\ 7. BULIMINUS (ACHATINELLOIDES) GOLLONSIRENSIS, n. sp. (Plate L X I X . fig. 10.) Shell ovately fusiform, narrowly rimate, solid ; sculpture regular rather pronounced costulation; colour white or pale buff, minutely mottled with brown, with very irregular jaggy, transverse, short streaks or patches of darker brown, slightly oblique to the costulation, which do not reach to the suture above ; spire elongately pyramidal, sides flatly convex, apex subacuminate,suture shallow; whorls 7, sides flat; aperture ovate, considerably more than one third the length of the axis ; peristome sharp, flatly convex on the outer margin and rounded below; columellar margin reflected, nearly covering the rimation, an internal fold. Longest specimen :- Major diam. 0*28, alt. axis 0*66, alt. apert. 0*32 inch. „ 7*3, „ 16-8, „ 8*0 millim. Shortest specimen :- Major diam. 0*21, alt. axis 0*50, alt. apert. 0*26 inch. „ „ 5*5, „ 13*0, „ 6*8 millim. [On trees, not uncommon on hill-slopes; these are from those bounding the Gollonsir valley.-B. B.~\ The older specimens lose much of their coloration ; but the fine mottling can generally be made out. 8. BULIMINUS (ACHATINELLOIDES) TIGRIS, n. sp. (Plate LXVIII. fig. 6.) Shell rimate, ovately fusiform, solid, smooth and polished ; sculpture lines of strise discernible under lens; colour white and buff-brown, streaked diagonally below with narrow bands of brown; above, each whorl ornamented with jagged regularly disposed transverse bands of the same colour ; spire elongately pyramidal, sides slightly convex ; suture shallow ; whorls 6, sides slightly convex; aperture oval, subvertical; peristome thick, regularly convex on the outer margin ; columellar margin with a strong plication, very little reflected. |