Selenidium alleni
Selenidium amphinomi
Selenidium annulatum
Selenidium axiferens
Selenidium branchiommatis
Selenidium brasili
Selenidium cantoui
Selenidium caulleryi
Selenidium cirratuli
Selenidium cometomorpha
Selenidium costatum
Selenidium cruzi
Selenidium curvicollum
Selenidium echinatum
Selenidium fallax
Selenidium fauchaldi
Selenidium flabelligerae
Selenidium filiformis
Selenidium foliatum
Selenidium folium
Selenidium francianum
Selenidium giganteum
Selenidium grassei
Selenidium halteroide
Selenidium hermellae
Selenidium hollandei
Selenidium intraepitheliale
Selenidium mackinnonae
Selenidium martinensis
Selenidium melinnae
Selenidium melongena
Selenidium mercierellae
Selenidium mesnili
Selenidium metchnikovi
Selenidium orientale
Selenidium parvum
Selenidium pendula
Selenidium pennatum
Selenidium pisinnus
Selenidium plicatum
Selenidium polydorae
Selenidium potamillae
Selenidium productum
Selenidium rayi
Selenidium sabellae
Selenidium sabellariae
Selenidium serpulae
Selenidium sipunculi
Selenidium spatulatum
Selenidium spinosis
Selenidium spionis
Selenidium stellatum
Selenidium synaptae
Selenidium telepsavi
Selenidium terebellae
Selenidium virgula
Selenidium is a genus of parasitic alveolates in the phylum Apicomplexa. Species in this genus infect marine invertebrates.