Dr. Holló Ferenc - Dr. Murai Éva szerk.: Parasitologia Hungarica 5. (Budapest, 1972)

Table 1. length //4./ of eggs % number of eggs width /A/ % number of eggs 100-115 2.1 70 48-52 2.3 74 116-131 45.1 1478 53-59 7.7 253 132-147 35.3 1158 60-66 30.9 1014 143-162 17.3 566 67-73 39.3 1289 162-181 0.2 8 74-80 19.8 650 Explanation of Plate I-II 1 - Formation of egg-shell in the proximal part of the uterus. 2 - Polarized microphotogramm of the egg-shell. 3 - Microphotogramm of PAS positive vitelline cells, 4 - Nuclei stained with haematoxyline

. 5-6 - Eggs of different shapes. 7 - Egg at the age of some hours with morula in the bicellular stage. 8 - Egg at the age of two days. 9 - Egg at the age of four days. 10 Egg at the age of six days. 11 - Egg at the age of eight days. 12 - Living miracidium. 13 - Egg at the age of eight days with the "network" consisting of large cells formed by the depleting vitelline cells. 14 - Egg at the age of 10 days. 15 - Moment of opening of operculum. 16 - Miracidium emerging from egg. 17 Spine an antiopercular end of egg. 18 - Epidermal structures on terebratorium of Paramphistomum daubneyi /anterior view/. 19 Epidermal • cells of Paramphistomum daubneyi. 20- Epidermal cells of Diplodiscus subclavatus. /1-20 = Author's photo/