Dr. Holló Ferenc szerk.: Parasitologia Hungarica 3. (Budapest, 1970)

Discussion The first finding of Hymenolepis straminea (Goeze, 1782) in Hungary is reported by EDE1ENYI, 1966. In Cricetus cricetus he found a single tapeworm species which was not described in his paper. EDELÉNYI, 1966 illustrated a single hook of cricetoid type. This figure of the hook, as well as the host of the tapeworm (Cricetus cricetus) indicate that EDELÉNYI, 1966 examined the above tapeworm species. In the present paper,the figure of hooks from a scolex in shown (see Eig. 2). The hooks are illustrated according to the total preparation, and as our figure indicates, only several hooks have the correct position. In the systematic and taxonomic studies hooks only in correct position should be evaluated. It is not only the type but also the accurate metric data of the hooks that should be determined. BAER and TENORA, 1970 revealed that the reason that some authors had observed hooks in an incorrect position, as well as that they had often worked without having a comparative material, led to the situation that the taxonomy of the species H. straminea (Goeze, 1782) was not solved correctly so far. In this way, also, SPASSKIJ's (1954) opinion that Hymenolepis fraterna (Stiles, 1906) may be a synonym of H. straminea (Goeze, 1782) occurs in the books (cf., e.g., KOTLÁN, I960, ERHARD, LÄMMLER, HINZ and THEMANN, 1962 and others - cf. the complete list of these authors by BAER and TENORA, 1970). The material of the latter two authors, as well as their description clearly indicate that both H.fraterna (Stiles, I9O6) and H.straminea (Goeze, 1782) are valid species. In connection with the opinion that H. microstoma (Dujardin, 1845) is a synonym of H. straminea (Goeze, 1782), the finding of H. microstoma reported for the first time in Hungarian fauna by TENORA, 1967, who had found this parasite in Pitymys subterraneus, should be revised. According to the criteria given by BAER and TENORA, 1970, as well as on the basis of reexamining the existing material, we state that the tapeworm species