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

1933; JOYEUX and BAER, 1936; SPASSKY, 1951; RYZHIKOV et al., 1978), sometimes it is considered to belong to the genus Anoplocephaloides (see e.g. RAUSCH 1976; TENORA, HAUKISALMI and HENTTONEN, 1985a). In their study, TENORA, MURAI and VAUCHER (1985) give detailed morphological, anatomical and metric characteristics of the species P. blanchardi. Their concept is that the above species is characterized by a very short vagina (of about one half of the cirrus sac), has an elongated seminal receptacle and testes distributed in the aporal half of the segments only. It is also characterized by a very strict one-sided opening of the reproductive organs. As in the case of the species P. omphalodes

, we do not exclude, that in the publications (dealing with the species P. blanchardi - until 1985 -) is published complex of forms representing more species of different genera (Paranoplocephala

, Anoplocephaloides)

. 3. Paranoplocephala campestris (Cholodkowsky, 1913), Tenora et Vaucher, 1983. Syn.: Anoplocephala campestris Cholodkowsky, 1913, Paranoplocephala blanchardi (Moniez, 1891), sensu Baer, 1927 pro parte. Original host: ArvjcoJa^am£e_s_tris = _M_-_ajiyaHs, Poland. Holotype: does not exist. Comments: A species with one-sided genital openings, found only once. Since than it has only been reclassified into various genera, or as a synonym of already known species. TENORA and VAUCHER (1983) considered that material to be the species P. campestris which TENORA and MURAI (1980) had classified as P. blanchardi

. TENORA, MURAI and VAUCHER (1985) again returned to the problem of a more exact identification of the above-mentioned material. They concluded that it was the species P. omphalodes. Based on the pictures drawn by CHOLODKOWSKY (1912), it is possible to say that P. cam pestris whose testes are not across, not beyond the aporal ventral excretory canal. It is a species with strikingly enormous suckers and markedly elongated segments in the right-left direction. Only new material from^L. arvalis in Poland could explain P. campestr

is as a bona species. Since it was only found once and, in addition, only some fragments and since it will be necessary to detail its description, at the present time it can conveniently be considered to be a species inquirenda (see TENORA, MURAI and VAUCHER, 1985). 4. Paranoplocephala macrocephala (Douthitt, 1915) Rausch, 1976. Syn. : Andrya macrocephala Douthitt, 1915, Andrya translucida Douthitt, 1915. Original host: Gej3m^s_bjar_sarius,_ North America. Holotype: deposited in the Helminthological Collection of the U. S. National Museum. Comm ents: Since the time of its description from the original host (1915), this species has been reported only as a parasite of various species of rodents of the family Arvicolidae in the USA and in Europe. In their studies, RAUSCH (1948), RAUSCH and SCHILLER (1949) and RAUSCH (1952) give their opinions on the taxonomic position of the species A. macrocephala. The two latter studies reported that the species P. macrocephala (in material from the USA) has a considerable morphological and metric variability. Of the same opinion is e. g. ZARNOWSKI (1955-1956), based on material from Poland. Even though we do admit that the original findings of the species P. macrocephala in Geomys bursa^ius_ were incidental and that the original hosts of this tapeworm species are, in fact, rodents of the family Arvicolidae, it does not seem to be probable that all the forms of the species P. macrocephala given in the study of RAUSCH and SCHILLER (1949) belong'to only