Paraboysidia serpa van Benthem Jutting, 1950
“The new Paraboysidia somewhat resembles Gyliotrachela modesta in form, but this latter species has the last part of the whorl free, and its mouth armature is less developed. On the other hand P. serpa is closely related to P. frequens, but frequens has a more slender spire, a narrower base and narrower umbilicus, while the peripheral keel is weaker.” (Benthem-Jutting, 1949)
Benthem-Jutting (1949) original descriptions on Paraboysidia serpa – “Shell moderately small, with a conical spire on a rather broad base and a wide aperture which is not free, but adnate to the preceding whorl. Reddish-brown. Not transparent. First 1 ½ whorls smooth, polished, the subsequent ones striated or weakly ribbed according to the growth lines. There is no spiral striation. Whorls 5, the last one ending straight, or somewhat descending, but never ascending. Sides of the whorls rounded, only on the last one there is a conspicuous, but not sharp, longitudinal peripheral keel. A similar keel encircles the umbilicus. Suture rather deep. Umbilicus open, rather wide. Aperture wide, with angular and parietal lamellae separate. Columellar, upper and lower palatal teeth large, infraparietal, basal and interpalatal ones small. Peristome continuous, thickened and broadly expanded.”
Paraboysidia serpa – “Dimensions: Height – 2.9-3.4 mm; Breadth – 2.6-3.1 mm; Height of aperture – 1.4-1.6 mm. (Benthem-Jutting, 1949)
Type locality – “Baling, Kedah” leg. Benthem-Jutting/Dec. 1938 (Benthem-Jutting, 1949)