Dr. Murai Éva szerk.: Parasitologia Hungarica 11. (Budapest, 1978)

The genital atrium was characterized by NÄSMARK (19 37) as that without any musculature. Slightly developed radial musculature in the genital atrium can, however, be observed in both NÄSMARK'

s and our preparations. These deviations suggest that re-examination of the structure of these organs, based on an extensive comparative material should be desirable, especially in case of closely related species. Paramphistomum daubneyi Dinnik, 1962 Rumania is next in the line of the European countries where this species has been recovered. It has been found in samples collected in Bucharest and Cluj. Of the muscular organs, the pharynx is of Calicophoron

, the genital atrium Micro- bothrium and the acetabulum is of Paramphistomum type (Figs. 3, 4, 8 respectively). Besides histo-morphological features, the presence of this species in Rumania is supported by this speqies having been propagated successfully under laboratory conditions here in Lymnaea truncatula which is the intermediate host along its distribution (personal communication by V. FROMUNDA, Institute "Pasteur", Bucharest). Paramphistomum gotoi Fukui, 1922 The occurrance of this species in Central Europe is first reported here. In Europe it was recovered for the first time in the Mordovskiï ASSR (STEPANOV, 1969). Sample collected in Tulcea (Lunkavita) contained this species in great number. P. gotoi is closely related morphologically to P. cervi. Although both species in question have the same types of muscular organs, peculiarities of the pharynx of P. gotoi and differences in measurements of the genital atrium can serve as reliable features in differentiation between them. The pharynx of P. gotoi is bigger and the first third of its inner surface is covered by longer papillae (60 p in length) than those of P. cervi (Fig. 2). The diameter of the genital opening of P. gotoi is about half as long as that of P. cervi (Figs. 4 and 5 were taken at the same magnification). In addition, differences can be established in the development of pars prostatica; in P. cervi these glands are better developed (Fig. 4) than that of P. gotoi (Fig. 5). Up to now P. got

oi has been found in three, relatively removed countries (Japan, European part of USSR and Rumania). Namely, species described under this name in India (TANDON, 1955) and Malaysia (LEE et LOWE, 1971) is very probably not identical with P. gotoi (SEY, 1976). The actual localities of this species can be considered as remnants of an earlier, presumably wider, more or less continous distribution or it is quite possible that the present state is somewhat similar to recognition of distribution of P. ichikawai

. This species was described in Japan for the first time in 1922 and up to the fifties its presence was believed to have been limited to this country only. Several localities are known nowadays in Asia, Europe and Australia where this species has occurred. Subsequent examinations and results will throw light on the nature of distribution of this species. Figs. 1-9: Median sagittal sections of organs of species recovered 1 = Pharynx of Paramphistomum cervi; 2 = Pharynx of P. gotoi; 3 - Pharynx of P. ichikawai; 4 = Genital atrium of P. cervi; 5 = Genital atrium of P. gotoi; 6 = Genital atrium of P. daubneyi; 7 = Genital atrium of P. ichikawai; 8 = Dorsal half of acetabulum of P. gotoi; 9 = Dorsal half of acetabulum of P. ichikawai