Dr. Murai Éva szerk.: Parasitologia Hungarica 19. (Budapest, 1986)

and forming an organ with network-like structure with uterine diverticula. Egg with piriform apparatus. Parasites of rodents. Type species: Paranoplocephala omphalodes (Hermann, 1783) Structure of the genus Paranoplocephala Lühe, 1910 1. Paranoplocephala omphalodes (Hermann, 1783) Lühe, 1910. Syn.: Taenia omphalodes Hermann, 1783, Halysis omphalodes (Hermann, 1783), Zeder, 1803, Anoplocephala omphalodes (Hermann, 1783) Janicki, 1904, Bertiella omphalodes (Hermann, 1783) Meggitt, 1921. Original host: ? MicrotUS arvalis, Germany, Hermann 1783: ". . . in gewöhnlichen kleinen Feldmaus, die aber einen etwas dicker Kopf hat.

. . ". Holotype: does not exist. Neotype deposited in the Humboldt Museum, Berlin, No. 1889. Comments: This species, whose original description is very imperfect, has been re-described many times (see e.g.: DU JARDIN, 1845; STIEDA, 1862; LINSTOW, 1878; JANTCKI, 1906; BAER, 1927; JOYEUX and BAER, 1936; SOLTYS, 1949; ERHARDOVÁ and RYSAVY, 1955; SPASSKY, 1951; RAUSCH, 1952; SCHMIDT, 1961; MURAI, 1970; COLINS, 1972; RYZHIKOV et al. , 1978; TENORA and MURAI, 1980; GENOV, 1984; TENORA, HAUKISAI.MI and HENTTONEN

, 1985; and others). However, the re-descriptions are frequently very different so that it is very difficult to prove that the above-mentioned authors studied the same species. This fact is markedly evident in the study of COLINS (1972) who re-described P. omphalodes. In this study, the species P. acanthocirrosa Baer, 1924 is incorrectly considered to be a synonym of the species P. omphalodes. In the case of the former species it is a bona species in the genus Anoplocephaloides. In addition, in studying the description of the species L. ompha lodes as given by COLINS (1972), we have come to the conclusion that this material does not represent the given species and that they can be representatives of a new genus since the vesicula seminalis interna and externa are absent. TEXORA and ZEJDA (1974) and GENOV (1984) also draw attention to the fact that the species P. omphalodes was sometimes mistaken for the species A. macrocephala. RAUSCH (1976) and TEXORA, MURAI, VAUCHER (1986) give more exact data on their rich comparative material. Numerous species of rodents are given as hosts of the species P. omphalodes

, distributed both in the palaearctic and nearctic regions (RAUSCH, 1982). The main characters of the species P. omphalodes are given in the key. The considerable morphological and anatomical variability of the species P. omphalodes shows that it is a complex of forms and it is not yet clear whether they are separate species. 2. Paranoplocephala blanchardi (Moniez, 189 1). Syn. : Taenia blanchardi Moniez, 1891, Anoplocephala blan

chardi (Moniez, 1891) Janicki, 1904, Anoplocephaloides blanchardi (Moniez, 1891) Baer, 1924, Paranoplocephala blanchardi (Moniez, 1891) Baer, 1927. Host of the neotype: Mi^crqtusarvalis, Europe. Holotype does not exist, the neotype is deposited in the Muséum Histoire Naturelle, Geneve, No. 974 254. Com m ents : This species, very frequently discussed in the literature, is known as a parasite of rodents of the family Arvicolidae (see e.g. MONIEZ, 1891; JANTCKI, 1906; BAER, 1972; DOLLFl'S, 1961; ISHIMOTO, 1974; RAUSCH, 1976; TENORA and MURAI, 1980; GENOV, 1984; TENORA, HAUKISALMI and HENTTONEN, 1985a, TENORA, MURAI and VAUCHER, 1985). Since the original description was very modest, characters distinguishing tin s species from other related species are very difficult to find. This species has very often seen considered to be a synonym of the species P. omphalodes (see e.g. BAER, 1932; CAMERON and PARNELL,