COVER -- TITLE -- COPYRIGHT -- CONTENTS -- ABSTRACT -- ACKNOWLEDGMENTS -- INTRODUCTION -- MATERIALS AND METHODS -- FAMILY HETERORHABDIDAE SARS 1902 -- GENERA AND SUBGENERA OF THE FAMILY HETERORHABDIDAE -- KEY TO GENERA AND SUBGENERA OF THE FAMILY HETERORHABDIDAE -- GENUS DISSETA GIESBRECHT 1889 -- Nominal species of the genus Disseta -- Key to species of Disseta -- Disseta palumbii Giesbrecht 1889 -- Disseta scopularis (Brady 1883) -- Disseta magna Bradford 1971 -- GENUS MESORHABDUS SARS 1905 -- Nominal species of the genus Mesorhabdus -- Key to species of Mesorhabdus -- Mesorhabdus angustus Sars 1907 -- Mesorhabdus brevicaudatus (Wolfenden 1905) -- Mesorhabdus gracilis Sars 1907 -- Mesorhabdus paragracilis, new species -- Mesorhabdus poriphorus, new species -- GENUS HETEROSTYLITES SARS 1920 -- List of species of the genus Heterostylites -- Key to species of Heterostylites -- Heterostylites major (Dahl 1894) -- Heterostylites submajor, new species -- Heterostylites nigrotinctus Brady 1918 -- Heterostylites longicornis (Giesbrecht 1889) -- Heterostylites longioperculis, new species -- Heterostylites echinatus, new species -- GENUS HEMIRHABDUS WOLFENDEN 1911 -- Nominal species of the genus Hemirhabdus -- Key to species of Hemirhabdus -- Hemirhabdus grimaldii (Richard 1893) -- Hemirhabdus amplus, new species -- GENUS NEORHABDUS HEPTNER 1972 -- List of species of the genus Neorhabdus -- Key to species of Neorhabdus -- Neorhabdus latus (Sars 1905) -- Neorhabdus falciformis (Wolfenden 1911) -- Neorhabdus brevicornis, new species -- Neorhabdus capitaneus, new species -- Neorhabdus subcapitaneus, new species -- GENUS PARAHETERORHABDUS BRODSKY 1950 -- SUBGENUS PARAHETERORHABDUS BRODSKY 1950 -- List of species of the subgenus Paraheterorhabdus -- Key to species of the subgenus Paraheterorhabdus.

Paraheterorhabdus (Paraheterorhabdus) robustus (Farran 1908) -- Paraheterorhabdus (Paraheterorhabdus) longispinus (Davis 1949) -- Paraheterorhabdus (Paraheterorhabdus) farrani (Brady 1918) -- Paraheterorhabdus (Paraheterorhabdus) illgi, new species -- Paraheterorhabdus (Paraheterorhabdus) medianus (Park 1970) -- Paraheterorhabdus (Paraheterorhabdus) vipera (Giesbrecht 1889) -- SUBGENUS ANTIRHABDUS, NEW SUBGENUS -- Paraheterorhabdus (Antirhabdus) compactus (Sars 1900) -- GENUS HETERORHABDUS GIESBRECHT 1898 -- KEY TO SPECIES GROUPS OF HETERORHABDUS -- SPINIFRONS SPECIES GROUP -- Key to species of spinifrons species group -- Heterorhabdus spinifrons (Claus 1863) -- Heterorhabdus heterolobus, new species -- Heterorhabdus subspinifrons Tanaka 1964 -- Heterorhabdus quadrilobus, new species -- Heterorhabdus ankylocolus, new species -- Heterorhabdus caribbeanensis Park 1970 -- Heterorhabdus insukae, new species -- PAPILLIGER SPECIES GROUP -- Key to species of papilliger species group -- Heterorhabdus guineanensis, new species -- Heterorhabdus lobatus Bradford 1971 -- Heterorhabdus papilliger (Claus 1863) -- Heterorhabdus spinifer Park 1970 -- Heterorhabdus prolatus, new species -- FISTULOSUS SPECIES GROUP -- Key to species of fistulosus species group -- Heterorhabdus fistulosus Tanaka 1964 -- Heterorhabdus egregius Heptner 1972 -- ABYSSALIS SPECIES GROUP -- Key to species of abyssalis species group -- Heterorhabdus habrosomus, new species -- Heterorhabdus prolixus, new species -- Heterorhabdus clausii (Giesbrecht 1889) -- Heterorhabdus tuberculus, new species -- Heterorhabdus pustulifer Farran 1929 -- Heterorhabdus oikoumenikis, new species -- Heterorhabdus longisegmentus, new species -- Heterorhabdus americanus, new species -- Heterorhabdus cohibilis, new species -- Heterorhabdus spinosus Bradford 1971 -- Heterorhabdus paraspinosus, new species.

Heterorhabdus austrinus Giesbrecht 1902 -- Heterorhabdus abyssalis (Giesbrecht 1889) -- Heterorhabdus pacificus Brodsky 1950 -- Heterorhabdus confusibilis, new species -- Heterorhabdus tanneri (Giesbrecht 1895) -- Heterorhabdus norvegicus (Boeck 1872) -- PHYLOGENY -- DISTRIBUTION -- LITERATURE CITED -- FIGURES.