Volume 12   LOURENÇO W. R. 2-17 Scorpions from Brazilian Amazonia, with a description of two new species from ‘Serra da Mocidade’ National Park in the State of Roraima (Scorpiones: Buthidae, Chactidae) LOURENÇO W. R., SADINE S. A., BISSATI S. & HOUTIA A. 18-30 The genus Buthacus Birula, 1908 in Northern and Central Algeria; description of a new species and comments on possible micro-endemic populations (Scorpiones: Buthidae) LOURENÇO W. R. 31-39 Further amendments to the taxonomy of the genus Buthacus Birula, 1908 (Scorpiones: Buthidae) ROSSI A. 40-44 More comments on Pandinops platycheles (Werner, 1916) (Scorpiones: Scorpionidae)