. Recherche herpétologique chinois. Les amphibiens, reptiles. Je recherche herpétologique chinois Avril 1989 Volume 2, Numéro 2, pp. 55-591 études caryotypiques de Sphenomorphus indicus (Scincidés) et Takydromus septentrionalis (Lacertidae) 479- YANGl ZHENGFA, GAO^^ ^Zhao Ermi ANfD Département de génie biologique, Université du Sichuan, Chengdu, Sichuan, Chine ^ofAnxian Comté Middle School, Sichuan Chine Chengdu , ^Institut de biologie, Academia Sinica, Chengdu, Sichuan, Chine Résumé. -Sphenomorphus indicus (Gris) a un nombre diploïde de 28 à 14 chromosomes métacentriques et macrochromosomes 14 microchromosomes. L

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. Chinese herpetological research. Amphibians; Reptiles. I April 1989 Chinese Herpetological Research Vol. 2, No. 2, pp. 55-591 Karyotypic studies of Sphenomorphus indicus (Scincidae) and Takydromus septentrionalis (Lacertidae) YUHUA YANGl- ZHENGFA GAO^, ANfD ERMI ZHAO^ ^Department of Bioengineering, Sichuan University, Chengdu, Sichuan, China ^County Middle School ofAnxian, Sichuan , China ^Chengdu Institute of Biology, Academia Sinica, Chengdu, Sichuan , China Abstract. -Sphenomorphus indicus (Gray) has a diploid number of 28 with 14 metacentric macrochromosomes and 14 microchromosomes. The NF value is 42. Takydromus septentrionalis (Guenther) has a karyotype with 36 acrocentric macrochromosomes and only 2 microchromosomes (2n=38). The NF value is 38. These karyotypic data are compared with related species. Key words: Sauria, Scincidae, Lacertidae, Sphenomorphus, Takydromus, Cytotaxonomy, Sichuan, China. I*rovince, China. The specimens were injected intraperitoneally with 0.01 ml colchicine solution (3mg/ml) per gram of body weight. Sixteen hours after the injection, he specimens were killed. The bone marrow cells were flushed with 1% sodium citrate, the testes were removed, and cell suspensions were prepared. Then the chromosome preparations were made using an air-drying technique. The diploid number (2n) was determined by observing the preparations under an oil objective. Ten selected cells were photographed, enlarged, and measured for calculating the chromosome parameters. The chromosomes were classified with the standard proposed by Levan et al. (1964). The abbreviations for the morphology of chromosomes are as follows: "M" is used for a macrochromosome, "m" for a microchromosome, "V" for a metacentric chromosome and "I" for an acrocentric chromosome. The "Nombre Fondamental" (NF) is the total number of arms in the karyotype. A metacentric (V) has two arms, an acrocentric (I) has one arm, and a microchromosome

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