Sinoennea chintamanensis Tomlin, 1941
Tomlin (1941) original descriptions on Sinoennea chintamanensis – “Somewhat the build of chatasensis herein described, but shorter in proportion to breadth, with a different aperture, and differently sculptured. This shell has seven whorls, the first two forming a smooth protoconch, and strong, distant axial riblets of which there are about twenty on the antepenultimate whorl; umbilicus deep but rather narrow; suture shallow; aperture oblong, gradually narrowing; parietal tooth large and curving to the left, a large tooth about the centre of the outer lip with a bulge on the peristome above it and a labial tooth opposite on the columellar side; there is also a strong deep-seated protuberance in the throat of the aperture; peristome much thickened and expanded.”
Benthem-Jutting (1961) descriptions on Sinoennea chintamanensis – “Shell ventricose-ovoid, spire somewhat pointed, then broadening till about the middle of the entire shell-height, after that narrowing towards the aperture. Glassy-white, hyaline, ribbed with strong transverve ribs, standing away wing-like from the shell surface. There are 16-19 ribs on the last whorl. No spiral striation. Whorls 6 ¼-6 ¾, the two first smooth, the following ones ribbed with widely placed ribs. All whorls rather convex in profile. In the central whorls the greatest diameter lies a little above the periphery, rendering the profile slightly “shouldered”. Suture well impressed. Top projecting, but not sharp, base rounded. Umbilicus open, but not wide. Last whorl slightly ascending towards the peristome. Aperture almost vertical, narrow, elongate-oval, or quadrangular with rounded angles. Peristome continuous, thickened, adnate and reflected. With a sinus at the junction of parietal and palatal angle. From this meeting point a high, undulating lamella enters the aperture for quite a long distance. On the columellar side the shell possesses two teeth, a small round knob at the margin, an elongate tooth deeper down. The latter corresponds with a small groove or pit on the exterior of the last whorl in the umbilical area. Between this pit and the peristome the last whorl is somewhat swollen. At the parietal wall the two teeth are confluent at their bases, with two tops, a small upper one and a strong lower one. Behind this compound tooth the exterior wall of the shell shows a depression. The immature shell has four teeth of which the parietal one is strongest. During further development this juvenile dentition is resorbed again. In the full-grown shell there are no teeth whatever in the spire; they appear only at the peristome.”
Sinoennea chintamanensis – “Long. 3.40 mm; diam max. 2 mm.” (Tomlin, 1941); Sinoennea chintamanensis – “Dimensions: Height 3.1-3.6 mm; Width 1.9-2.0 mm; Height of aperture 1.3-1.5 mm.” (Benthem-Jutting, 1961)
Type locality – “Bukit Chintamani, between Bentong and Karak, Pahang” (Tomlin, 1941)