Haliphron atlanticus – synonym of Alloposus mollis
Halteria rubra – synonym of Myrionecta rubra
Hartmannula oliva – synonym of Aegyriana oliva
Hastigerinella riedeli – synonym of Orcadia riedeli
Helicostomella edentata – synonym of Helicostomella subulata
Helicostomella fusiformis – synonym of Helicostomella subulata
Helicostomella kiliensis – synonym of Helicostomella subulata
Helicostomella Lemairei – synonym of Helicostomella subulata
Helicostomella longa – synonym of Helicostomella subulata
Hexacontium armatum – synonym of Hexacontium armatum/hostile
Hexacontium hostile – synonym of Hexacontium armatum/hostile
Hexalonche aristarchi – synonym of Hexacontium aristarchi
Histioteuthis elongata – synonym of Histioteuthis reversa
Hymeniastrum euclidis – synonym of Dictyocoryne profunda
Hypoconcha parasitica – synonym of Hypoconcha sabulosa