Reference

M. Maeda, Philip G. Carey (1984): A revision of the genera *Trachelostyla* and *Gonostomum* (Ciliophora, Hypotrichida), including redescriptions of *T. pediculiformis* (#Cohn#, 1866) #Kahl#, 1932 and *T. caudata* #Kahl#, 1932 – Bull. Br. Mus. nat. Hist. (Zool.) – 47: 1 - 17.