Hypselostoma terae Tomlin, 1939  

Tomlin (1939) original descriptions on Hypselostoma terae – “Shell chestnut-brown with about five convex whorls and having widely-spaced lines of growth which are more distinct and regular than in B. kelantanensis especially on the last whorl; it is deeply rimate rather than perforate and may at once be known by the fact that the dorsal part of the last whorl has a strongly raised peripheral keel; the teeth are fewer than in B. kelantanensis, viz. one short and rather strong parietal lamella, one short, deep-seated, horizontal, columellar lamella, one basal plica and one inconspicuous little plica within the outer lip; this is sometimes absent owing no doubt to immaturity.”

Benthem-Jutting (1949) descriptions on Hypselostoma terae – “The spire is rather conical, consisting of 4½ whorls before the free part. First 1½ whorls smooth, polished. The outers finely striated according to the growth lines. There is no spiral striation. Suture deep. The thread-like keel begins after the 4th whorl. It is placed almost exactly on the middle of the whorl, and continues on the free trumpet till the aperture. Aperture almost vertical, widened, trumpet-shaped. Peristome somewhat thickened and expanded. There is one parieto-angular lamella, one columellar, one upper and one lower palatal tooth. The upper palatal fold is very weak. The degree of loose-fitting of the last whorl is variable. Sometimes the trumpet is long, sometimes short.”