Dicharax duoculmen (Godwin-Austen, 1914) Fig. 40A–E Alycaeus duoculmen Godwin-Austen, 1914: 365, pl. 157 figs 2, 2a. Alycaeus (Raptomphalus) duoculmen – Gude 1921: 286–287. Chamalycaeus (Raptomphalus) duoculmen – Ramakrishna et al. 2010: 68. Dicharax (?) duoculmen – Páll-Gergely et al. 2020: 86. Type material examined INDIA • holotype (single shell mentioned in the original description: Fig. 40A–E); Tsanspu Valley; Oakes leg.; NHMUK 1903.7.1.3582. Type locality “Tsanspu Valley”. Differential diagnosis The most similar species is D. magnificus, which has a stronger R1 sculpture, a more strongly fringed aperture and a sharper keel on the umbilical side of R2.

Published as part of Páll-Gergely, Barna, Gojšina, Vukašin & Aravind, Neelavar Ananthram, 2025, A review of Chamalycaeus, Cycloryx and Dicharax species of the Himalaya and Myanmar and seven new species of Alycaeinae from the Blue Mountain, Mizoram, India (Gastropoda, Caenogastropoda, Cyclophoridae), pp. 1-158 in European Journal of Taxonomy 1029 on page 71, DOI: 10.5852/ejt.2025.1029.3131, http://zenodo.org/record/17864673