Discartemon leptoglyphus van Benthem Jutting, 1954
“Compared with D. hypocrites it has a wider umbilicus, a wider and more expanded last whorl, which is not pinched. Aperture with only one tooth (instead of 3-4 as in D. hypocrites) on the peristome. Compared with D. platymorphus it differs in the smaller size, and the somewhat upturned outer corner of the peristome. The tooth in the aperture is less distinct than in D. platymorphus. Compared with D. nummus it differs in the absence of a peripheral keel, and in the presence of tranverse costulation on both upper and lower side of the shell. The upper margin of the peristome is less deflected and protruding than in D. nummus. Compared with D. sykesi it differs in the smaller size, the well developed transverse striae above and below, and the less deflected and protruding upper peristomal margin.” (Benthem-Jutting, 1954)
Benthem-Jutting (1954) original descriptions on Discartemon leptoglyphus – “Shell almost discoidal, with very low spire, creamy white. First 2-2 ½ whorls smooth, following ones with fine, regular, close-set, somewhat wavy transverse ribs on both upper and lower side of the shell. On the last whorl, near the peristome, there are about 8-9 ribs to the mm. No spiral striation. Fresh shells shining and glassy transparent. Whorls 5-5 ½, well rounded. The first 4-4 ½ normally coiled and regularly increasing in diameter, the last whorl somewhat inflated and expanded, partly overlapping the preceding one on the dorsal side. Towards the aperture the last whorl first ascends, then descends. Suture distinct. Periphery bluntly angulate; in full-grown shells the angulation disappears in the last whorl, so that the periphery is rounded. Top very little projecting, base broad and little convex, but not quite flat. Umbilicus very wide, showing all previous whorls. On the umbilical side the last whorl is bluntly angular. Aperture trigonal or arrow-shaped, very oblique. Peristome not continuous, thickened and reflected, towards the outer corner somewhat rising like an upturned nose. Upper lip expanded and projecting, inflected in the middle so as to form a low, indistinct, tooth-like protuberance. At the upper parietal corner the upper margin forms a sinuous ridge, joining the parietal lamella. Lower lip receding, parallel to the upper one. Parietal side with an almost horizontally placed lamella, entering into the aperture 2-3 mm.”
Discartemon leptoglyphus – “Dimensions; Width 6.1-8.7, height 2.4-3.1, height of aperture 1.8-2.2 mm.” (Benthem-Jutting, 1954)
Type locality – “Kramat Pulai, Kinta Valley, Perak” leg. Benthem-Jutting/Mar. 1939 (Benthem-Jutting, 1954)
Other localities - “Gunong Rapat, Kinta Valley, near Ipoh, Perak” leg. Benthem-Jutting/Mar. 1937 (Benthem-Jutting, 1954); “Gunong Kroh, Kinta Valley, Simpang, Perak” leg. Benthem-Jutting/July 1946 (Benthem-Jutting, 1954)