Photos (A–C) and SEM images (D–F) of Endothyrella protoconchs. A Endothyrella oglei (Godwin-Austen, 1879), same data as in Fig. 5 B Endothyrella serica (syntype of munipurensis, same data as in Fig. 5.) C Endothyrella babbagei (Gude, 1915), same data as in Fig. 3 D Endothyrella plectostoma (Benson, 1836), MNHN 2012-27053 E Endothyrella nepalica Budha & Páll-Gergely sp. n., paratype from the Siddha Cave F Endothyrella inexpectata Páll-Gergely, sp. n., (holotype). A–C Harold Taylor D–F B. Páll-Gergely.