Helicarion gunongensis (Godwin Austen, 1909)
Godwin-Austen (1909) original descriptions on Sitala(?) gunongensis – “Shell globosely conoid, not umbilicated, with well-defined wavy longitudinal striation, strong on base; colour pale burnt sienna, milky white on apical whorls; spire low, sides flat; apex blunt; suture shallow; whorls 4, tlie hxst inflated, regularly increasing; aperture lunate; peristome thin; columellar margin nearly perpendicular, rounded, and reflected.”
“Animal - Foot well divided; the peripodial margin would appear in life to be paler than the part above, a small overhanging lobe. There is a small pointed right shell lobe, also a well-developed left shell lobe. The animal was in a very hardened state; plain water had scarcely any effect in softening it, so I used at last a little caustic potash.” (Godwin-Austen, 1909)
“This, of course, destroyed the internal organs, but I secured the radula; the jaw unfortunately was not found. This radula has the formula 60 . 2 . 10 . 1 . 10 . 2 . 60, or 72 . 1 . 72 ; total in row, 145. The centrals and admedians are on elongate quadrate plates, the main point or mesocone being long and spindle-shaped; below the side cusp there is a conspicuous sharp shoulder; the marginals are very evenly bicuspid, becoming gradually very minute towards the outer edge; some of these minute teeth are tricuspid; there is no serration, as seen in the teeth of the radula of Lamprocystis.” (Godwin-Austen, 1909)
Sitala(?) gunongensis – “Major diam. 5.7 mm.” (Godwin-Austen, 1909)
Type locality – “Gunong Inas, Perak State” (Godwin-Austen, 1909)