Abstract

A new species of fossorial skink, the third member of the genus Pseudoacontias, is described from Nosy Be, an island off the northwest coast of Madagascar. This species most resembles P. madagascariensis in limbless body, but differs in color pattern, number of supralabials and infralabials, height of subocular, and overlap relation of primary temporal and supralabials.

In: Amphibia-Reptilia

Abstract

The taxonomic status of the flying lizard, Draco curnutus Günther, 1864, recently frequently regarded as a junior synonym of D. volans Linnaeus, 1758, is reassessed. Our field observations in Borneo confirmed sympatric occurrence of two morphotypes of D. volans sensu lato, one of which showed a diagnostic character of D. cornutus. The two morphotypes also differ from each other in live coloration, allozyme pattern and mitochondrial DNA sequence. From these results, it is concluded that D. curnutus is a valid species.

In: Amphibia-Reptilia

Abstract

Morphological variation, the karyotype, and reproduction in the parthenogenetic blind snake (Ramphotyphlops braminus) were studied on the basis of a large sample from the Ryukyu Archipelago, Taiwan, and Saipan. Meristic and morphometric characters showed little geographic variation. The numbers of transverse scale rings and vertebrae, each somewhat variable within the sample, were significantly correlated with each other. The karyotype of specimens from the Ryukyu Archipelago and Taiwan consists of 42 chromosomes best interpreted as forming 14 triplets, indicating that R. braminus from this region has a triploid karyotype. Clutch size varied from one to eight, and was significantly correlated with the snout-vent length. From observations of gonads in preserved specimens and from captive breedings, R. braminus begins reproduction after April in the Ryukyu region.

In: Amphibia-Reptilia