Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 12. 1985. (Budapest, 1985)

of the sample. The Tarkő fossil sample has a poorer fit with several breakpoints, indicating that this sample is rather heterogenous. This is quite understandable as the probable age differences of the various layers had not been taken into consideration. Fig. 2B shows detrended normal probability plots. Though the scatter of teh points of the fossil group is fairly large, none of the points of the fossil group fall outside the range of deviations -0.5 to +0.5, indicating that the Beremend Loc. 15 specimen, though the largest in the width/length ratio, clearly belongs to the other fossils in these dimmensions. A conclusion of this study could be that the general trend of shortening of the toothrows and teeth in Myotis evolution is reflected by the reduction of length of upper M 3. (I thank my colleague Dr. A. DEMETER for assistance with the computation.) The lower C shows no pecularities, although, fitting well into the greater measurements of cross-sectional length of the recent specimens, it is greater than the mean (1.1193 mm) of 31 recent bats. The width of lower C actually equals the mean (1.2241 mm) of the recent specimens. The present fossil radius seems stronger than the few recent radii studied. Although in absence of more complete and richer findings, further conclusions are not possible, one can infer from the above data a somewhat stronger and slightly more primitive animal in the evolutionary line of the recent M. blythi oxygnathus. This is the second oldest known M

. blythi in Hungary. Pipistrellus cf. pipistrellus (Schreber, 1774) One injured and worn right upper M 1, collected in 1981 by D. JÁNOSSY and the author. Measurements: antero-posterior length 1.13 mm, width between lingual and mesostylar margins 1.36 mm. Remarks

. The lack of protoconule, as well as the closeness of the anterior base of the paracone-protocone crist to the anterior margin of tooth marks the systematic position of this unfortunately single piece. This is the oldest pipistrelle remain yet discovered in Europe as these bats are not usually cave dwellers. Eptesicus cf. praeglacialis Kormos, 1930 There are a few separate teeth in the 1981 material collected by Dr. JÁNOSSY and the author as follows: left upper C, right upper M 1, left upper M 2, right lower P 4, left lower M 1. Measurements: Upper C basal cross-sectional length 2.18 mm, width 1.68 mm; upper M 1 antero-posterior length 2.15 mm, M 1 width between lingual and mesostylar margins 2.43 mm; upper M 2 antero-posterior length 2.05 mm, upper M 2 width between lingual and mesostylar margins 2.50 mm; lower P 4 cross-sectional length 1.22 mm; P 4 cross-sectional width 1.18 mm; lower M 1 antero-posterior length 2.03; trigonid width of M 1 1.36 mm; talonid width of M 1 1.40 mm. Comparisons and remarks

. The upper C seems to be longer in absolute size of cross-section and wider than in the majority of the recent E. serotinus (Schreber, 1774) (length 1.77-2.13, width 1.40-1.72 mm) and in fossils found in the Middle Pleistocene of Tarkő (length 1.68-2.13, width 1 .45-1.63 mm). On the other hand, there are somewhat larger specimens in the Lower Pleistocene of Csarnóta 2 material (length 1.86-2.27, width 1.50-1.72 mm) (see Fig. 3 E,F). The upper M 1 is slightly greater than that in most of the recent animals (length 1.95-2.18 mm, mesostylar width 2.27-2.68 mm), and falls between the extremes measured in the Tarkő specimens (antero-posterior length 2.00-2.23 mm, mesostylar width 2.41-2.50 mm), as well as the ones found in Csarnóta (antero-posterior length 2.03-2.27 mm, mesostylar width 2.27-2.72 mm) (see: Fig. 3 G). The differences in measurements of the upper M 2 between the fossils and the recent animals are still less pronounced, or even inverse as shown in the following. In recent specimens: antero-posterior length 1.90-2.18 mm (N=31), mesostylar width 2.45-2.86 mm (N=31). In the Tarkő material: anteroposterior length 2.13-2.23 mm (N=5), mesostylar width 2.54-2.86 mm (N=5); in Csarnóta 2 locality: antero-posterior length 2.18-2.31 mm (N=3), mesostylar width 2.72-2.77 mm (N=3). The separate lower teeth were also compared with the type specimen of E. praeglacialis from Püspökfürdő (No. 06/4728 in the collection of Hungarian Geological Institute) and one (No.V.

61.1406 of the Palaeontological Department of the Hungarian Natural History Museum) from Nagyharsányhegy (see also: Fig. 3 A, B, C,D). Lower P 4 cross-sectional length in Püspökfürdő 1.40 mm, in Nagyharsányhegy 1.18 mm, in Csarnóta 1.18 mm (N=l), in Tarkő 1.09-1.22 mm (N=5), in recent serotinus 1.091.36 mm (N=31). Lower P 4 cross-sectional width in Püspökfürdő 1.27 mm, in Nagyharsányhegy 1.22 mm, in Csarnóta 1.09 mm (N=l), in Tarkő 1.00-1.27 mm (N=5), in recent 1.09-1.31 mm