Paraboysidia kelantanensis tenuidentata van Benthem Jutting, 1950
“The two shells come so close to Paraboysidia kelantanensis kelantanensis that I consider them as a local form, a geographical subspecies, of the Kelantan form. Compared with the main form the new subspecies differs in having the angular lamella so weakly developed that it is hardly discernable. Besides there are no small teeth between the four principal ones. Another characteristic is the very weak, almost invisible, keel along the periphery of the last whorl. From the preceding subspecies P. kel. tenuidentata differs in the less robust build and the smaller number of weaker teeth. From the related new species Boysidia ringens from Mount Keriang P. kel. tenuidentata differs in the smaller size, the absence of spiral striae and the less developed mouth armature.” (Benthem-Jutting, 1949)
Benthem-Jutting (1949) original descriptions on Paraboysidia kelantanensis tenuidentata – “Shell small, with a moderately high spire and a wide aperture which is not free, but adnate to the last whorl. Warm brown, somewhat transparent. First 1½ whorls smooth, polished, the following ones delicately striated with oblique growth lines. Whorls 4½, entirely rounded. Only in the last 1-1½ mm. of the ultimate whorl before the peristome there are three shallow acquires a somewhat quadrangular character. Suture deep. Umbilicus open, but not wide. Aperture almost vertical, widened, containing 4 principal teeth and a small, obsolete angular one. Peristome continuous, somewhat thickened and expanded.”
Paraboysidia kelantanensis tenuidentata – “Dimensions: Height – 2.8-2.9 mm; Breadth – 2.3-2.4 mm; Height of aperture – 1.3 mm. (Benthem-Jutting, 1949)
Type locality – “Kramat Pulai, Perak” leg. Benthem-Jutting/Mar. 1939 (Benthem-Jutting, 1949)