Turbonilla obesa
Turbonilla obesa is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. Description The robust shell has a chocolate brown color. Its length measures 5.2 mm. The whorls of the protoconch are small and deeply obliquely immersed in the first turn of the teleoconch, above which only the tilted edge of the last one projects. The eight whorls of the teleoconch are flattened and moderately shouldered at the summit. They are marked by strong vertical axial ribs, which are decidedly contracted at their junctions with the spiral grooves, which lends them a somewhat nodulous aspect. Of these ribs, 16 appear on the first, 18 on the second, 20 upon the third to fifth, 22 on the sixth, and 24 on the penultimate turn. The intercostal spaces are about as broad as the ribs. They are crossed by five strongly incised spiral grooves which almost cross the ribs. One of these is at the periphery. The remaining four appear in a double series; the one placed about as far below the summit as the other is above the periphery, the space between them being wider than that between the summit and the