[2] The distribution of Endothyrella plectostoma includes India, Bangladesh and Myanmar.

[2] The most important shell characters for identification of Endothyrella plectostoma include: very narrow umbilicus; there are five rows of hairs; there is present horizontal parietal plica.

[2] The lamella is slightly curved, with short lower and long upper elongation in anterior direction.

[2] In contrast, Endothyrella affinis lacks the horizontal parietal plica and has four hair rows.

[2] Endothyrella tricarinata differs from Endothyrella plectostoma by the larger size, more conical dorsal surface, narrower umbilicus, the shouldered whorls, the presence of only four rows of hairs, and the stronger sculpture.