. Asiatic herpetological research. Reptiles -- Asia Periodicals; Amphibians -- Asia Periodicals. Vol. 6, p. 168 Asiatic Herpetological Research April 1995 TABLE 1. The arm ratio and relative length of Megophrys minor and Oreolalax major. Megophrys minor Oreolalax major Arm Ratio Relative length Type 1 Arm Ratio ± Relative length + Type 1 ± + m m 2 + + sm 2 + + m 3 + ± sm 3 + ± sm 4 ± ± m 4 ± sm 5 ± ± m 5 ± sm 6 ±
. Asiatic herpetological research. Reptiles -- Asia Periodicals; Amphibians -- Asia Periodicals. Vol. 6, p. 168 Asiatic Herpetological Research April 1995 TABLE 1. The arm ratio and relative length of Megophrys minor and Oreolalax major. Megophrys minor Oreolalax major Arm Ratio Relative length Type 1 Arm Ratio ± Relative length + Type 1 ± + m m 2 + + sm 2 + + m 3 + ± sm 3 + ± sm 4 ± ± m 4 ± sm 5 ± ± m 5 ± sm 6 ± ± sm 6 + m/sm 7 ± ± sm 7 + m 8 + + m 8 + m 9 ± ± m 9 ± sm 10 ± ± m 10 + m 11 ± m 11 + m 12 + ± m 12 + m 13 * + t 13 + m 1 1 \ * • D. > a • . • , N FIG. 1 centric position on each chromosome pair of M. minor, and only two weakly positive C- bands were discovered in O. major. One was associated with the secondary constriction of chromosome No. 6, and another was in the proximal position of the long arm of chromosome No. 1 which was not related to the secondary constriction (Figs. 1, 2). Unfortunately, we cannot get the C- bands from females from the two species. Moreover, it is also impossible to know whether the early stage of ZW/ZZ sex chromosomes differentiation like Poecilia shenops var. melanistica (Haaf and Schmidt, 1984) and Leiopelma hamiltoni (Green, 1988) exists or not. Discussion Karyotypes There is no doubt that M. minor has the second karyotype formula (5+8) of Morescalchi (1973) as shown in Table Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfect
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