O. G. Dely szerk.: Vertebrata Hungarica 8/1-2. (Budapest, 1966)
Marián, M.: The herpetofauna of the Fehértó (Lake Fehér) near Kardoskut, Hungary 93-104. o.
found in and the nearer neighbourhood of the Fehértó at Kardoskut. Therefore only one-third of the 15 home amphibian species inhabits this area. Of the six home amphibian families, it is merely the Salamandridae which is not represented here. Triturus v. vulgari s L. , also belonging to this family, will probably be found in the research area (I have found it on the alkali flats near Pusztaszer). Two reptile species ( Lacerta a. agili s L., and Natrix n. natri x L.) were successfully shown, only a fragment of the 15 home reptilian species inhabiting Hungary. Two of the five home reptile families are thereby represented. The occurrence of representatives of the families Anguida e and Sclnclda e are not probable, whereas Emys orbiculari s L. , belonging to the family Emydida e , may yet be found to occur. (I have demonstrated the species from the alkali lake of Kunfehértó.) According to MÉHELY, the frog species form, owing to identical requirements as to habitats, coexistent species groups, following a given „leading species" (KEHELY, 1901). The leading species of the species group of the plains, as established by MÉHELYi, is Rana arvali s, accompanied by Bombina bombin a, Pelobates fuscu s, Rana ridibund a, and Bufo viridi s. The assumption seems to be valid also for the frog species of the soda plains at Kardoskut with the difference, however, that the leading species, Rana arvali s, has not yet been found. Its occurrence seems probable on the basis of the above consideration. (I found the species in the alkali marsh of Kunfehértó.) Owing to the rate of its numbers, Rana ridibund a is the dominant species among the ones inhabiting the research area. The species are all widely distributed, hilly to flatland species (eurytop taxa). They are therefore not natrophilous, but of a high ecological valency. In semi-desert
