Reference

J Norman Grim (1992): Descriptions of two sympatric and phylogenetically diverse ciliated Protozoa, *Balantidium zebrascopi* n. sp. and *Paracichlidotherus leeuwenhoeki* n. gen., n. sp., symbionts in the intestines of the surgeonfish, *Zebrasoma scopas* – Trans. Am. microsc. Soc. – 111: 149 - 157.