Cassidulus infidus Mortensen, 1948 (original description)
Clypeaster fervens hiradicus Mortensen, 1948 (original description)
Clypeaster lütkeni Mortensen, 1948 accepted as Clypeaster luetkeni Mortensen, 1948 (original description)
Clypeaster nummus Mortensen, 1948 (original description)
Clypeaster reticulatus sundaicus Mortensen, 1948 (original description)
Conolampas malayana Mortensen, 1948 (original description)
Echinocyamus apicatus Mortensen, 1948 (original description)
Echinocyamus convergens Mortensen, 1948 (original description)
Echinodiscus auritus siamensis Mortensen, 1948 (original description)
Echinolampas alexandri forcipulata Mortensen, 1948 (original description)
Echinolampas alexandri sibogae Mortensen, 1948 (original description)
Echinolampas keiensis (Mortensen, 1948) (additional source)
Fibularia (Fibulariella) angulipora Mortensen, 1948 accepted as Fibulariella angulipora (Mortensen, 1948) (original description)
Fibularia (Fibulariella) oblonga var. ambonensis Mortensen, 1948 accepted as Fibularia (Fibulariella) oblonga ambonensis Mortensen, 1948 (original description)
Laganum boninense Mortensen, 1948 (original description)
Laganum depressum alienum Mortensen, 1948 accepted as Jacksonaster depressum alienum (Mortensen, 1948) (original description)
Laganum depressum tenue Mortensen, 1948 accepted as Jacksonaster depressum tenue (Mortensen, 1948) (original description)
Laganum dickersoni keiense Mortensen, 1948 (original description)
Laganum fudsiyama africanum Mortensen, 1948 (original description)
Laganum fudsiyama indicum Mortensen, 1948 (original description)
Laganum fudsiyama var. africanum Mortensen, 1948 accepted as Laganum fudsiyama africanum Mortensen, 1948 (original description)
Laganum joubini formosum Mortensen, 1948 (original description)
Mellita grantii Mortensen, 1948 accepted as Lanthonia grantii (Mortensen, 1948) (original description)
Peronella japonica Mortensen, 1948 (original description)
Peronella keiensis Mortensen, 1948 (original description)
Peronella lesueuri gadiana Mortensen, 1948 (original description)
Peronella oblonga Mortensen, 1948 (original description)
Peronella orbicularis concava Mortensen, 1948 (original description)
Planilampas Mortensen, 1948 accepted as Echinolampas Gray, 1825 (original description)
Planilampas keiensis Mortensen, 1948 accepted as Echinolampas keiensis (Mortensen, 1948) (original description)
Procassidulus malayanus Mortensen, 1948 accepted as Kassandrina malayana (Mortensen, 1948) (original description)