Based on a systematic study of the Mexican species in the Tillandsia viridiflora complex, the taxonomic and nomenclatural status of these species is clarified. The former synonym T. macropetala is reestablished as a species. An identification key for the complex…

The small Maastrichtian coral fauna of Ocozocoautla (Chiapas, Mexico) is being taxonomically reviewed. In contrast to an older study, the material is examined by preparing thin sections and carrying out systematic measurements to ensure that any comparisons of the material…

Twenty one species and subspecies of Exetastes Grav. are recorded from Mexico. Exetastes arteagus sp. nov., E. gauldi sp. nov. and E. lascivus sp. nov. are described as new. Exetastes pasculus Gauld et Ugalde is recorded for the first time…