Arañas terafosidas de Costa Rica (Araneae, Theraphosidae). IV. Generos Metriopelma y Cyclosternum, incluyendo especies de Panama
Four new species are described from Costa Rica and Panama. Metriopelma zebrata Banks is redescribed, its female being new to science. Cyclosternum fasciatus, new combination, is discussed. M. morosus Banks is reduced to synonymy of M. zebrata. An English Appendiz with keys, diagnosis and explaination to figures is included.