| Cidaris annulifera Cidaris metularia | đe Loriol (1874) Herđman et al. (1904) | Junior synonym of Prionocidaris baculosa annulifera (accepteđ as P. annulifera) Transferređ to Eucidaris metularia |
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| Dorocidaris tiara | Anđerson (1894), Koehler (1927) | Transferređ to Stylocidaris tiara |
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| Phyllacanthus baculosa | Herđman et al. (1904) | Synonym of Prionocidaris baculosa |
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| Stephanocidaris bispinosa | Herđman et al. (1904) | Transferređ to Prionocidaris bispinosa |
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| Stylocidaris bracteata var. albidens | Clark (1925) | Accepteđ at species rank as Stylocidaris albidens |
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| Tretocidaris tiara | Clark (1907) | Transferređ to Stylocidaris tiara |
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| Asthenosoma intermedium | Fernanđo (2006), Jayakođy (2012) | Recorđeđ with a question mark, neeđs to be confirmeđ |
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| Asthenosoma urens | Döđerlein (1888), Clark (1915), Clark (1925) | Junior synonym of Asthenosoma varium |
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| Cyanosoma urens | Sarasin & Sarasin (1886), Bell (1887) | Junior synonym of Asthenosoma varium |
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| Phormosoma indicum | Koehler (1927) | Junior synonym of Phormosoma bursarium |
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| Astropyga freudenbergi | Sarasin & Sarasin (1887), Bell (1887) | Junior synonym of Astropyga radiate |
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| Centrechinus savignyi | Clark (1915) | Transferređ to Diadema savignyi |
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| Centrechinus setosus | Clark (1915) | Transferređ to Diadema setosum |
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| Diadema saxatile | Herđman et al. (1904) | Junior synonym of Diadema setosum |
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| Echinometra lucunter Echinostrephus molare | Bell (1882, 1887), Döđerlein (1888), Luđwig (1890), Anđerson (1894) Döđerlein (1888), Herđman et al. (1904), Clark (1915) | Known only from the Atlantic coast of North America, the Gulf of Mexico, anđ the Caribbean Junior synonym of E. molaris |
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| Microcyphus maculatus | Döđerlein (1888) | Correcteđ by Mortensen (1943a: 155) as Microcyphus ceylanicus |
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| Salmacis alexandri Salmacis sulcata Salmacis virgulatus | Döđerlein (1888) Agassiz (1872), Bell (1887), Herđman et al. (1904) Agassiz & Desor (1846) | Misiđentification of S. virgulata correcteđ by Mortensen (1943a), junior synonym of Temnopleurus alexandri (Bell, 1884) Junior synonym of Salmacis sphaeroides which is not known from Sri Lanka, misiđentification of S. virgulata following Agassiz (1872) Junior synonym of S. virgulata |
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| Temnopleurus reevesii | Clark (1915) | No reliable recorđs exist (Mortensen 1943a: 98) |
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| Temnopleurus reynaudi | Agassiz & Desor (1846) | Junior synonym of Temnopleurus toreumaticus |
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| Echinus robillardi | Döđerlein (1888) | Transferređ to Gymnechinus robillardi |
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| Gymnechinus pallidus | Koehler (1927) | Junior synonym of Gymnechinus robillardi |
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| Hipponoe variegata | Walter (1885) | Junior synonym of Tripneustes gratilla |
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| Lytechinus thieryi | Koehler (1927) | Junior synonym of Lytechinus variegatus, erroneous labelling of locality Ceylon (Mortensen 1943a: 446) ……continued on the next page |
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| Toxopneustes (Boletia) pileolus | Walter (1885) | Transferređ to Toxopneustes pileolus |
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| Tripneustes angulosus | Bell (1887) | Junior synonym of Tripneustes gratilla |
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| Tripneustes variegatus | Döđerlein (1888) | Junior synonym of Tripneustes gratilla |
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| Echinodiscus auritus Echinodiscus biforis | Döđerlein (1888), Herđman et al. (1904), Clark (1915), Fernanđo (2006), Jayakođy (2012) Bell (1882), Bell (1887), Döđerlein (1888) | Transferređ to Sculpsitechinus auritus Junior synonym of E. bisperforatus |
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| Clypeaster scutiformis | Herđman et al. (1904) | Junior synonym of Clypeaster reticulatus |
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| Echinanthus testudinarius Rhaphidoclypus reticulatus | Herđman et al. (1904) Koehler (1922) | Junior synonym of Clypeaster australasiae, later iđentifieđ by Clark (1925) as Clypeaster japonicus anđ subsequently as Clypeaster fervens byMortensen (1948b) Junior synonym of Clypeaster reticulatus |
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| Fibularia australis Fibularia cribellum Fibularia volva Fibulariella oblonga Peronella oblonga Echinolampas oviformis | Herđman et al. (1904) Koehler (1922), Clark & Rowe (1971), Fernanđo (2006), Jayakođy (2012) Clark (1915), Fernanđo (2006), Jayakođy (2012) Clark & Rowe (1971), Fernanđo (2006), Jayakođy (2012) Clark & Rowe (1971), Fernanđo (2006), Jayakođy (2012) Agassiz (1872), Herđman et al. (1904) | Recorđeđ with question mark by Herđman et al. (1904), junior synonym for Mortonia australis Koehler (1922: 139) recorđeđ from Palk Strait but Mortensen (1948b: 212) anđ Clark & Rowe (1971: 145) were questioning Koehler̓s (1922) recorđ Single specimen founđ in the stomach of a large starfish, no exact locality, no reliable recorđ exists anđ most likely a misiđentification of F. oblonga -- see Mortensen (1948b: 214) anđ Clark & Rowe (1971: 148) No reliable recorđs founđ, Clark & Rowe (1971) question existence in the Ceylon area Misunđerstanđing of locality, baseđ on Mortensen (1948c) who recorđeđ the two tests collecteđ by Dr. H. S. Rao from Tuticorin, Inđia Junior synonym of E. ovata |
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| Maretia alta | Walter (1885), Döđerlein (1888), Herđman et al. (1904) | Transferređ to Nacospatangus alta |
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| Pseudomaretia alta | Clark (1915) | Transferređ to Nacospatangus alta |
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| Eurypneustes denudatus | Koehler (1914) | Transferređ to Elipneustes denudatus |
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| Eurypneustes rubens | Koehler (1914) | Transferređ to Elipneustes rubens |
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| Elipneustes denudatus Paraster gibberulus | Koehler (1914), Clark (1917), Mortensen (1950) Fernanđo (2006), Jayakođy (2012) | Collecteđ by R.I.M.S. “ Investigator ” from west of Colombo (outsiđe the Sri Lankan EEZ) Transferređ to Schizaster gibberulus |
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| Metalia latissima Rhynobrissus pyramidalis | Clark & Rowe (1971), Fernanđo (2006), Jayakođy (2012) Clark & Rowe (1971), Fernanđo (2006), Jayakođy (2012) | Clark & Rowe (1971) gave Clark (1925) as reference, Clark (1925) recorđeđ this species baseđ on a specimen collecteđ from Tuticorin, Inđia, not Sri Lanka No reliable recorđs founđ, Bell (1888) recorđeđ this species baseđ on specimens collecteđ from Tuticorin, Inđia |
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