272 Hendrickx all species and 90.1% of all genera al known for Pacific Mexico. Finally, area
III contains 457 species in 243 genera, or 63.5% of all species and 79.9% of all genera from
Pacific Mexico. Although it is found at a higher latitude than arca III, the fauna of area II has a
higher biodiversity than the one found in Southwestern Mexico: 580 vs. 457 species and 274
vs. 243 genera. The endemic component of area II corresponds to 98 species o subspecies.
When put together, the information related to areas I and II indicates that no less than 634 …