Sinoennea baculum van Benthem Jutting, 1961
“The new species is related to Sinoennea attenuata, lenggongensis and subcylindrica, but is smaller and more slender than any of these, with a narrower umbilicus and with very weak ribs. S. ridleyi is so much larger that a comparison is out of the question. S. butleri, dactylus and tiarella are less slender, with well developed ribs. Although the shells in the various samples differ somewhat these differences are not important enough to classify them as separate taxonomic units. The single shell from Kota Gelanggi and the lot from Bukit Serdam, although the localities lie some 70 miles distance, resemble each other more than the Kota Gelanggi and Kota Tongkat shells, two sites forming one mountain complex. In spite of these differences I did not find reason to separate them by infra-specific classification.” (Benthem-Jutting, 1961)
Benthem-Jutting (1961) original descriptions on Sinoennea baculum – “Shell high, narrowly cylindrical, glassy transparent, shining. Two top whorls smooth, following ones with vertical ribs at regular distance, about 2o on the last whorl. Thses ribs are, however, often worn off, the shell assuming a smooth appearance, with traces of the ribs only along the suture. Whorls 7, regularly increasing in size, little convex, suture not deep. Top obtuse, base rounded, umbilicus narrow. Aperture small, quadrangular with rounded angles, position almost vertical. Peristome adnate, continuous, with a strong parietal lamella, entering the aperture and folded. Columellar fold somewhat in the interior of the aperture. On the palatal side two teeth, the upper, larger one just at the margin, the lower, smaller one somewhat deeper down. Behind the peristome the distal part of the last whorl is a little inflated.”
Sinoennea baculum – “Dimensions: Height 2.7-3.1 mm; Width 0.8-0.9 mm; Height of aperture 0.7-0.8 mm.” (Benthem-Jutting, 1961)
Type locality – “Malaya; Bukit Serdam, near Raub, Pahang” (Benthem-Jutting, 1961)
Other localities – “Malaya; Kota Gelanggi, Pahang” (Benthem-Jutting, 1961); “Malaya; Kota Tongkat, Pahang” (Benthem-Jutting, 1961)