“…Species possessing multiple types of sensilla may be found in turbellarians (Bedini et al, 1973(Bedini et al, , 1975, monogeneans (Lyons, 1969;Rohde, 1972b), trematode miracidia (Wilson, 1970;Pan, 1980) and cercariae (Morris, 1971;Nuttman, 1971), digenean adults (Bennett, 1975;Edwards et al, 1977;Fujino et al, 1979;Hoole and Mitchell, 1981), and cestodes (Webb andDavey, 1974, 1975;Richards and Arme, 1982).…”