Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 10. 1981. (Budapest, 1981)

discriminant function Fig. 5. Frequency distributions of discriminant function • Z values of Myotis nattereri and Myotis kretzoll KRETZOI'

s Incomplete manuscript (see, JÄNOSSY 1979, p. 108-109) lists among six - four of them unnamed - species of Myotis

, the species "

Myotis extlnctus

" is a nomen nudum. So, nowadays it is difficult to decide whether he dealt with the present species. Still, It is very probable because this animal seems to be one of the commonest Mouse-eared Bat in the locality. As in the case of M. bechstelnl, the same can be observed on M. nattereri during the Upper Pleistocene, that is, the previous, predecessory populations differ from the recent one probably just in size (TOPÁL 1963, 1964). As we dig deeper and deeper, along with size differences, certain morphological characters are also discernible in the related populations. These changes are due to the mosaic type of evolution. The more localities became known, however, the more continuities are seen among the populations, subspecies and species. As compared with the very much older M. gundersheimensis Heller (see HELLER 1936), the measurements are rather close, and although the compressed lower premolars are similar, the lower incisivi being four cusped in gundersheimensis as in M. emarginatus. In M. kretzoii sp.n. three cusps are available. Another fossil species which has similar measurements Is M. aemulus Heller from Gundersheim too. It differs, however, in its greater P4-M3 length (5.2 mm) and by the freely situated P3. Its mandibular length also seems to be greater (13.2 mm) than that of the new animal. M. praevius Heller again from Gundersheim is very similar to the new animal in the height of the mandibular body, but its lower molar-row is clearly shorter (3.9 mm) than in our new species. Finally, M. dellcatus Heller from Gundersheim has a very similar mandibular length (11.9-12.4 mm) but seemingly shorter M^-Mß length (4.1 mm). At the same time, the form of its processus coronoideus suggests a member of subgenus Leuconoe rather, than that of Selysius

. Fig. 3. Scatter diagram correlating C-M

3 length with M^-M

3 length in Myotis nattereri and Myotis kretzoi, with regression lines and equations. Legend, as for Fig. 1 Fig. 4. Scatter diagram correlating C-M

J length with C-C rostral width in Myotis nattereri and Myotis kretzoii, with regression lines and equations. Legend, as for Flg. 1