Morphology of three new colonial sessile peritrich ciliates, Pseudepistylis paramphora n. sp., Zoothamnium paranii n. sp and Z. hartwigi n. sp., with notes on Epicarchesium variabile (Ciliophora, Peritrichia). European Journal of Protistology, 51(2), Apr 2015: 186-195. 187 [Zoological Record Volume 151]