Type Locality : Macho holotipo de Puerto Viejo, Sarapiquf, provincia de Heredia (UCR- 250)
Seven species of Sericopelma and 3 of Brachypelma are described as new and Brachypelma mesomelas (O.P. Cambridge), is redescribed and discussed. All diagnosis and key in English.
Brenesia 18: 259-288