Lizards recorded in the Caatinga region. 12.1 Tropidurus helenae; 12.2 Tropidurus hispidus; 12.3 Tropidurus jaguaribanus; 12.4 Tropidurus montanus; 12.5 Tropidurus mucujensis; 12.6 Tropidurus oreadicus; 12.7 Tropidurus pinima and 12.8 Tropidurus semitaeniatus. Photograph credits: Daniel Mesquita (12.1, 12.6, 12.8), Adrian Garda (12.2), Daniel Passos (12.3, 12.4, 12.7), Marco A. Freitas (12.5).