| Echinometra mathaei | Clark (1915, 1925), Clark & Rowe (1971), Price & Rowe (1996), Fernando (2006), Sastry (2007), Jayakody (2012) | | | 0.5–5 |
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| Echinometra oblonga | Walter (1885), Bell (1887), Clark (1915), CAS | A single specimen is housed at CAS, collected from cove immediately east of Dondra Head (5°55.5' N, 80°56' E) in 1983 | C4 | 1–5 |
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| Echinostrephus molaris | Döderlein (1888), Herdman et al. (1904), Clark (1915), Clark & Rowe (1971), Schultz (2005), Fernando (2006), Jayakody (2012) | | B2 | 13–24 |
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| Heterocentrotus mamillatus Family Temnopleuridae Microcyphus ceylanicus | Fernando (2006), Jayakody (2012) Mortensen (1942, 1943a), Clark & Rowe (1971), Price & Rowe (1996), Fernando (2006), Schultz (2011), Jayakody (2012) | Only protected sea urchin species in Sri Lanka under FFPO (Fauna and Flora Protection Ordinance Act 2009) Döderlein (1888) misidentified this as M. maculatus and was corrected by Mortensen (1943a); type specimen collected from Sri Lanka housed at the Zoologische Staatssammlung München (The Bavarian State Collection of Zoology, Munich); a syntype (specimen collected from Andaman Islands) in the BNHM, London | | 1–5 |
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| Salmaciella dussumieri | Herdman et al. (1904), Clark (1915), Koehler (1927), Mortensen (1943a), Clark & Rowe (1971), Schultz (2005), Fernando (2006), Sastry (2007), Jayakody (2012) | Koehler (1922) recorded a specimen taken from south of Sri Lanka (6° 01′ N, 81° 16′ E) by R.I.M.S. “ Investigator ” | B2, B3, C3 | 13–66 |
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