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

by the nuclei, since the demarcation line of the cells is hardly recognizable. This layer is discernible in the intercellular areas. The nuclei are oval or guttiform, their chromatin stock is finely granular and situated along the edge of the miracidium; their size is 4-6x3-4 yuv. One miracidium contains 52-58 subepithelial nuclei without any regularity in their arrangement /

fig. 4

/. Explanations of the abbreviations and drawings in Figs. 3-12 a - brain; am - apical gland; bm - penetration gland; dp - dorsal papilla; eg - embryo ball; ems - embryo cell; es - epidermal cell; evp - oral ventral papilla; hvp - caudal ventral papilla; ict - intercellular area; is - nerve cell; kp - secretory pore; lp - lateral papilla; Is - flame cell; am - nucleus; ses - subepithelial cell; t - terebratorium; T-^ T^ T

3 - axes through papillär groups. Fig. 3. - Epidermal cells of miracidium with nuclei and papillae in intercellular area /ventral view/; Fig. 4. - Anatomical view of miracidium; Fig. 5. - Epidermal cells of miracidium and papillae in the intercellular area /lateral view/; Fig. 6. - Papillae on terebratorium of Paramphistomum daubneyi /anterior view/; Fig. 7. - Papilla on terebratorium of Calicophoron calicopho- rurn /anterior view/ after SWART; Fig. 8. - Papilla on terebratorium of Diplodiscus subclavatus /anterior view/; Fig. 9-12. - Drawings reconstructed on the basis of cross-sections made at the height of all epidermal cell of miracidium .