Gyliotrachela emergens van Benthem Jutting, 1950
“The new species differs greatly from any other form of Gyliotrachela by its turretes spire and by the sudden broadening of the last whorl.” (Benthem-Jutting, 1949)
Benthem-Jutting (1949) original descriptions on Gyliotrachela emergens – “Shell consisting of a high, conical spire and a free trumpet-shaped part of the last whorl. Reddish-brown, somewhat lighter brown towards the aperture. First 1 ½ whorls smooth, polished. The others delicately striated with oblique growth lines. There is no spiral striation. Not transparent. Whorls 5 ¼-5 ¾ of which 5-5 ½ are regularly coiled and adnate, and about ¼ whorl free and projecting. Top mamillar. Whorls of the spire evenly rounded, suture deep. Last whorl suddently enlarges, angular or faintly keeled at the periphery. Base rounded, umbilicus rather wide, surrounded by a faint angulation. Free part of the trumpet not long. Aperture almost vertical or somewhat oblique, with 6 teeth. Angular and parietal lamellae separate. Columellar, upper and lower palatal teeth large, infrapalatal small. Peristome contibuous, thickened and expanded.”
Dimensions: Height – 2.7-3.5 mm; Breadth (with peristome) – 2.4-2.7 mm; Breadth (at origin of free part) – 1.3-1.7 mm; Height of aperture – 1.2-1.3 mm. (Benthem-Jutting, 1949)
Type locality – “Bukit Chuping, Perlis” leg. Benthem-Jutting/1939 (Benthem-Jutting, 1949)