Reptilia, Chelidae, Mesoclemmys tuberculata: geographical distribution extension

A New Species of Mesoclemmys, from the Open Formations of Northeastern Brazil (chelonii, Chelidae)

A new species of South American side-necked turtle is described from the state of Piauí, Brazil. It is related to the Amazonian species of the genus Mesoclemmys s.l. (new acceptation) and is apparently a biogeographically relictual population of a species formerly living under a more humid climate in northeastern Brazil.

Redescription and geographical variation of Monopeltis guentheri Boulenger (Amphisbaenia, Reptilia)

Malaysian Butterfly Lizard Leiolepis triploida (Reptilia, Squamata: Leiolepidae) in Clearwater Sanctuary, Perak: geographical range extension in Peninsular Malaysia

The Malaysian Butterfly Lizard Leiolepis triploida is known from the inland areas of Perlis, Kedah and Seberang Perai (Penang) in the northwestern part of Peninsular Malaysia. The present finding of this butterfly lizard in Clearwater Sanctuary, Batu Gajah, Perak Darul Ridzuan has extended its known geographical range further south in Peninsular Malaysia. It remains to be established how far so...

The geographical distribution of cancer.

STUDY of the geographical distribution of cancer has long been recognized to be one way of obtaining clues to its causation, and a great deal of work has been carried out to determine the incidence of different types of cancer in different parts of the world. Detailed incidence rates have been obtained for more than fifty populations, either by national or regional cancer registries or by speci...

Patterns of Geographical Distribution: Animals