Four new species of Halacaridae (Acarina : Prostigmata) are described
from Australian coastal waters : Lohmannella pinggi sp. n., Agauopsis
mokari sp. n., Agauopsis collaris sp. n. and Copidognathus scuna sp. n
. ; Thalassarachna lubricus (Bartsch), a species described from New Ze
aland, is recorded from Australia, and the descriptions of the female
and the deutonymph are given.