JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. Society for the Study of Amphibians and Reptiles is collaborating with JSTOR to digitize, preserve and extend access to Journal of Herpetology.

more »

... uperus mustersi occurs only in the Paghman Mountains of Afghanistan in a single stream. They inhabit the cold sources of the stream where they are active year-round, feeding on aquatic organisms. Morphological examination revealed many similarities to other members of the genus. Differences were found in the tail morphology, degree of skeletal ossification and gill development. The only adult sexual dimorphism is in the appearance of the cloaca. Redescriptions of the morphology of adults and larvae are given. Niche partitioning was found in habitat selection and prey size. Breeding coincides with the spring thaw when females lay at least two egg cases and attach them to submerged rocks or plants. Metamorphosis also takes place in the spring after two years of development.