Reinvestigation of Semenewia concentrica (DE KONINCK, 1847), previousl
y considered to be a chonetoidean, reveals that it belongs amongst the
strophalosioid productida. Futhermore Semenewia turns out to be a syn
onym of some specimens of Palmerhytis BRUNTON & MUNDY, 1986, so the re
maining specimens of the latter are renamed Parmephrix nov. gen., with
the new type species P. eileeni nov. sp.