Dr. Murai Éva szerk.: Parasitologia Hungarica 14. (Budapest, 1982)
DISCUSSION Comparing our results on the development of the uterus in P. omphalodes we can state that they correspond to the results given for the same species by RAUSCH (1976). We state, of course, that the primary cell aggregations of the uterus develop in the close proximity of the ovary and they progressively develop further into poral and aporal parts of segments beyond the ventral excretory canals. As far the development of the uterus in A. rhopalocephala is concerned, it is basically, the same as in P. omphalodes . The essential difference is only that originally the development occurs from one centre anteriorly of the cirrus sac, and that the uterus does not exceed the ventral excretory canals. Comparing our results in P.omphalodes and A .rhopalocephala with the results given byRAUSCH (1976) for the species of the genera Paranoplocephala and Anoplocephaloide s , we can state in accordance with RAUSCH (1976) that there are differences in the development of the uterus between the group of the species belonging to the genera Paranoplocephala and Andrya on one hand, and between the group of the species belonging to the genus Anoplocephaloides on the other hand. The same was proved in the study on the development of the uterus in Anoplocephaloides pseudowimerosa (cf., TENORA et al. 1982). In the species belonging to the genera Paranoplocephala and Andrya, the processes of the uterus form initially the fenestrated structure, later on the reticulated one. In the species of the genus Anoploce phaloides (e.g., A. dentata, A. mamillana, cf., Fig. 22, 23, eventually A. pseudowimerosa) , the uterus forms during its development a transverse tube or transverse irregularly protruding sac, in which mostly the lumen is clearly visible. Dorsal, ventral and eventually lateral processes do not form the fenestrated structure in the uterus; the developed sacculation covers only the surface parts of the uterus. Similarly it is in Anoplocephala magna with the difference that in gravid segments there is no sacculation (c.f. , Fig. 21). We state that there is an essential difference in the characteristics of the uterus in comparison with that of, e.g., Anoplocephaloides dentata (Fig. 22), Anoplocephala magna (Fig. 23) and in the group Paranoplocephala omphalodes and Andrya rhopalocephala (Fig. 18, 7). In accordance with RAUSCH (1976) we do not exclude the possibility that the characteristics of the uterus and its development are of potential complementary characters of generic value which may aid diagnosis of the various tapeworm genera of the family Anoplocephalidae. CONCLUSIONS The study deals with the development and characteristics of the uterus in Paranoplocephala omphalodes and Andrya rhopalocephala . It was found that the characteristics of the uterus are the same in both species. The difference is present in that in P. omphalodes , the uterus develops both between the ventral longitudinal excretory canals and in the region limited by the longitudinal excretory canals and by the side of the tapeworm, and, progressively, the uterus exceeds the longitudinal excretory canals bilaterally. In the case of A. rhopalocephala, the development of the uterus occurs between the longitudinal excretory canals only, and the uterus does not exceed the ventral excretory canals. The essential difference in the characteristics of the uterus is stated also in three groups of the family Anoplocephalidae, viz. species belonging to the genus Anoplocephaloides , species belonging to the genus Ano plocephal a and species belonging to the genera Paranoplocephala and Andrya. TENORA, F. — VAUCHER, C. — MURAI, É.: Az uterus fejlődése néhány Anoplocephalidae fajnál (Cestoda: Paranoplocephala, Andrya) Az uterus morfológiája az Anoplocephalidae család fajainál sok vitás kérdés felvetésére adott alkalmat. A jelen vizsgálat bizonyítja, hogy a Paranoplocephala és Andrya genusok uterus-fejlődése igen hasonló módon megy végbe. Jelentős különbséget csak abban lehet megjelölni, hogy míg a Paranoplocephalafajoknál az uterus átlépve a hosszanti vízedények vonalát a külső parenchyma rétegbe is kiterjeszkedik
