A taxonomic and morphological account of a collection of Phallodrilinae from coralline sands at Heron Island in Australia's Great Barrier Reef is given. Ten new forms are described:Jamiesoniella athecatagen. et sp.n.Phallodrilus rectisetosus heronensissubsp.n.P. geniculatussp.n.P. filithecatussp.n.P. clavatussp.n. (latter three all devoid of an alimentary canal),Bathydrilus superiovasatussp.n.Coralliodrilus atriobifidussp.n.C. oviatriatussp.n.C. parvigenitalissp.n. and the gutlessC. avisceralissp.n. Morphological notes are given forPhallodrilus albidusJamieson, 1977 andBathydrilus rohdei(Jamieson, 1977). The new meiobenthic genusJamiesoniellais characterized by having simple atria with only one pair of prostate glands, which are attached to ectal parts of atria, and by lacking spermathecae and penial setae, The genus is probably related toAktedrilusKnöllner andBacescuellaHrabě. A gutless species,Phallodrilus comorensissp.n. is described from the Comoro Islands in the Mozambique Channel (W Indian Ocean