Diplommatina attenuata Laidlaw, 1949
“Slenderer and more sharply angled on the last three whorls than the other Malayan species. The excentricity of the penultimate whorl is very plainly seen when the shell is viewed from behind. Superba shows to a much lesser degree the same peculiarity.” (Laidlaw, 1949)
Laidlaw (1949) original descriptions on Diplommatina attenuata – “Elongated shell, with very slender spire, of about 7 ½ whorls. The first four almost parallel sides, 5 and 6 increase rapidly, the latter, the penultimate is the widest, and is a little excentric. The three last whorls strongly keeled. On whorls 3-5 there is fine ribbing, on 6 the ribs become prominent, very wavy, and sharply angled where they cross the keel. The angle shows as a small spine-like point. Near the mouth the ribs become less prominent. There are about 26 on the penultimate whorl. Aperture very oblique, peristome expanded especially on the labial side.”
Diplommatina attenuata – “Length 2.5 mm. Breadth max. 1 mm.” (Laidlaw, 1949)
Type locality - Gua Bama, Pahang (Laidlaw, 1949)