Gyliotrachela modesta van Benthem Jutting, 1950  

Benthem-Jutting (1949) original descriptions on Gyliotrachela modesta – “Shell consisting of a rather high spire and a short, free, trumpet-shaped final part of the last whorl. Dark reddish-brown somewhat more yellowish-brown towards the aperture. First 1½ whorls smooth, polished. The others delicately striated with oblique, growth-lines. There is no spiral striation. Not transparent. Whorls 4¼-4½ of which 4-4¼ are regularly coiled and about 1/8 to ¼ whorl free and projecting. Whorls of the spire rounded, regularly increasing in size. Last whorl much large, inflated, and faintly keeled at the periphery. This peripheral angulation continues on the outer lateral side of the free part. There is another longitudinal angulation of about equal strength on the dorsal side of the free part. Suture deep. Umbilicus open and rather wide. Aperture somewhat oblique, widened, trumpet-shaped. {eristome continuous, thickened and expanded. The aperture contains 6 teeth. Angular and parietal lamellae are separate. Upper and lower palatal folds and columellar lamella large, infrapalatal fold small.”