Volume one: the genus Madrepora 1893. Volume two: the genus Turbinaria, the genus Astraeopora 1896. Volume three: the genus Montipora, the genus Anacropa 1897. Volume four: the family Poritidae, the genus Goniopora 1903. Volume five: the family Portidae, the genus Porites 1905. Volume six: the family Poritidae, the genus Porites 1906. Volume seven: a monograph of the recent Meandroid Astraeidae 1928.