Platycochlium saulae Dance, 1970
“Differs from P. sarawakense mainly in having two very distinct, opposite lamellae on the umbilical margins of the last whorl, partly covering the umbilicus, leaving open only a narrow slit in between. Juveniles do not have a peripheral keel, nor do they have umbilical lamellae. They are very difficult to separate from juveniles of P. sarawakense.” (Vermeulen, 1991)
Dance (1970) original descriptions on Platycochlium saulae – “Shell elliptical viewed from above and below; base flattened, spire broadly dome-shaped; translucent, colourless, glossy. Whorls 4½, gently sloping, suture shallow; last whorl encircled by a strong carina. Spire-whorls ornamented with strong, regularly-spaced collabral ribs, becoming obsolete half way between the suture and the carina; underside of the last whorl smooth with the exception of the area around the umbilicus. Varies usually 4 in number (but varying according to the stage of growth) the last-formed varix being very conspicuous. Umbilicus narrowly elliptical, the later whorls having grown in such a way that they largely occlude the otherwise wide and rounded umbilicus formed earlier; the thin, plate-like extensions of the last whorl which conceal most of the umbilicus are regularly ridged and rembles the fossula characteristic of many species of Cypraeidae. Aperture trigonal, with a thickened and reflected peristome which is attached to the previous whorls; parietal lamella originates a short way inside the last whorl and projects at its posterior point of attachment where it is thickened and bifurcate. Upper lip thickened, projecting and inflected to form a distinct tooth; lower lip armed with a narrow, receding tooth; 2 deep-seated palatal teeth, the upper pointed, the lower rounded, project towards the parietal lamella.”
Vermeulen (1991) descriptions on Platycochlium saulae – “Shell low conical to almost discoidal in frontal view. Sometimes distinctly elliptic in apical view. Whorls 3½-3¾, slightly convex above and below the periphery; periphery distinctly keeled; suture moderately impressed; top whorls smooth; next whorls with 4-5 varices next to the peristome, each varix preceded by a number of ribs, the ribs crossed by a fine, concentric striation. Umbilicus wide, elliptic. inner margin of the whorls entirely crenulated or only so near the varices; last whorl with two opposite, very distinct, approximately opposite umbilical lamellae, which partly cover the umbilicus and leave open only a slit in between. Aperture subtriangular with the parietal side concave. Peristome reflected, with a knob-like thickening on the palatal side, above which a shallow sinus; usually with a small notch in the edge between basal and parietal side. Teeth four: one angularis, a sinuous lamella starting deep inside and ending in a thick knob; one short basalis, ending as a small thickening of the peristome; two deeply set palatales, the upper one hidden behind the palatal swelling of the peristome.”
Platycochlium saulae – “Shell height – 1.0 mm; Shell width – 2.6 mm.” (Dance, 1970); Platycochlium saulae – “Height 1.2 mm; largest diameter 2.6-2.8 mm; smallest diameter 2.1-2.3 mm; height of aperture 0.8 mm; width of aperture 1.2 mm.” (Vermeulen, 1991)
Type locality – “Hill 8 miles SW of Serian” (Dance, 1970)
Other localities – “Wah Mountain, 23 miles S of Kuching”, and “Mas Mountain, 24 miles SSW of Kuching.” (Dance, 1970)
"Calcicole." (Vermeulen, 1991)