(het-err-off-riss) is a centrohelid heliozoon - the most speciose group of heliozoa. Heterophrys
is apparently naked, careful scrutiny usually reveals delicate radiating (organic) spicules. the arms terminate on a non-nuclear organizing centre (the dark dot in this cell. Heliozoa
are predators, motile prey is captured after swimming into the arms - as can be seen here. Phase contrast.