The first recorded regular echinoid species from Sri Lanka,
“Salmacis virgulatus” (now known as
S. virgulata L. Agassiz in L. Agassiz & Desor, 1846), was listed by Agassiz & Desor (1846). Knowledge of
Sri Lankan regular echinoids continued to advance until the end of the
19th century. However, there is a gap in knowledge between the
mid-20th and the beginning of the 21st centuries due
to a lack of systematic studies, with the exception of two checklists published
by the IUCN Red List in 2006 and 2012. In the present study, we compiled a
species list combining published data and new data based on fieldwork between
2013 and 2015. Echinoids were sampled by snorkelling, diving, examination of
fisheries bycatch, and collection of tests from beaches. The updated species
list presented in this study includes 39 regular echinoids belonging to 28
genera, nine families, and five orders. Phyllacanthus
imperialis (Lamarck, 1816) and Temnopleurus
toreumaticus (Leske, 1778), which were not recorded during the last
90 years, were confirmed to still occur in Sri Lanka by the present study. We
develop an updated species list of regular echinoids to form a basis for future
systematic work. The study recommends further investigation to evaluate the
status of deep-sea species and additional field work off the northern and
eastern coasts of Sri Lanka.