O. G. Dely szerk.: Vertebrata Hungarica 1/1-2. (Budapest, 1959)

Berinkey, László: Adatok a dévérkeszeg (Abramis brama L.) és a koncér (Rutilus rutilus L.) hybridjének ismeretéhez 5-24. o.

In contrast with the morphological characters, author makes the striking statement that, concerning the osteological features, the bream character is the dominating one /in 27 cases/, and that these characters are all constant with the exception of but one item /15/. As the similarities, that is, the grade of transition toward one of the parents are shown by always the same bones, author supposes that' this is in the nature of a rule of heredity. To finally decide the question, one needs further researches in this field. Bibliography 1. BERG, L.S.: Ryby presznich vod C.C.C.P. i szopredelitelni sztran /Moszkva - Leningrád, 1949, p. 531/. - 2. BLANCHARD, E.

: Les Poissons des Eaux Douces de la France /Paris, 1866, p. 357/. - 3. ELOCH, M.E.: Oekonomische Naturgeschichte der Fische Deutschlands /Berlin, 1782-84, tab. 95/. - 4. CARAUSU, S.: Tratat de Ichtologie /Bucarest, 1952, p. 427/. - 5. CUVIER, G. & VALENCIENNE, A.

: ^Histoire naturelle des Poissons /Paris, 1828-49, 17,

p.

53,59/. - 6. GEYER, F.: Bastarde zwischen Brassen /Abramis brama L./ und Plötze /Leuciscus rutilus L./ aus Seen Ostholstein /Zool. Anz

. 117, 1937, p. 283-292/. - 7. GROTE,W. & VOGT, C. & HOFER, B.

: Die Süsswasserfische von Mitteleuropa /Frankfurt am M.

, 1909, pp. 558/. - 8. GÜNTHER, A.

: Catalogue of the Fishes in the British Museum /London, 1868,7, p. 214/. - 9. HECKEL, J.: Über einige neue oder nicht gehörig unterschiedene Cyprinen nebst einer systematischen Darstellung der europäischen