Two new forms of cercariae are described from the fresh water snail Melanopsis tuberculata collected from Azraq Oasis and East Ghor Canal, Jordan during 1983 and 1985, respectively. Cercaria sp. I is a xiphidiocercaria belonging to the "Pusilla" sub-type. It has 3 pairs of penetration glands and a flame cell formula 2[(2+3+1+2)+(2)]= 20.Cercaria sp. II is an ocellate, apharyngeal brevifurcate cercaria. It has 5 pairs of penetration glands and a flame cell formula 2[(1+1+1)+(1+1)+(1)]= 12. Both cercariae develop in sporocysts