Boros István (szerk.): A Magyar Természettudományi Múzeum évkönyve 52. (Budapest 1960)
Agócsy, P. ; Pócs, T.: Data to the mollusk fauna of Hungary
Gerence brook near Bakonybél. From its loose, humified litter 3 small and 5 large (developed) specimens of Spelaeodiscus triadis were unearthed, known up to now only from Northern Hungary. A living specimen of Cepaea nemoralis found in this place is also worthy of note. The new locality is the northernmost known point of its range in Hungary. There lives a rich aquatic fauna in the marshy fields of the valley of a brook in the Széki forest, between Magyarpolány and Bakonygyepes, such as Viviparus hungaricus, Planorbis and Succinea species. Our sieves rendered Vertigo pusilla and V. antivertigo, and one specimen each of Caecilioides acicula and Acme polita, from among the roots of grasses, growing on a still wet though higher lying ground in this place. J. P a p p, our colleague in the Museum of Veszprém, collects now intensely in the Mts. Bakony. Noteworthy data from his collectings in Veszprém are the occurrence there of Caecilioides petitiana and Helioclimax pellucidus. The malacological fauna of the Balaton Plateau (the Balalonfelvidék in the NW) is in conjunction to a certain extent with that of the Mts. Bakony. This area is investigated by Dr. I. Pintér, solicitor, and it is to be thanked to him that there is now known more than a hundred species. Our own collectings in Badacsony is closely connected with it. Balea perversa was found among the roots of plants growing at the base of the basalt pillars on the SE side of the Badacsony' s cone. This rare, Atlanto-Mediterranean species was known in small numbers only from the Mts. Bükk. We found four shells on one square meters in Badacsony. Many Goniodiscus rotundatus and some few G. perspectivus lived there together with it. The number of species shown from the old volcano is 23. This richness in individuals and species is rather striking, since it is well-known that the BadaFig. 2. The ranges of Cochlodina parreyssi Rossmässler (1,) and Laciniaria turgida Rossmässler (2,) in Hungary. The numeral 3 represents the common occurrence of the two species.
