Peculiar to Chontales: 133 species.
Common to Chontales and Mexico: 38 species.
Common to Do. and the West India Islands: 5 species.
Common to Do. and the United States: 5 species.
Common to Do. and New Grenada or Venezuela: 24 species.
Common to Do. and the Amazon Region: 22 species.
Common to Do. and South Brazil: 10 species.
Generally distributed in Tropical America: 5 species.
Total: 242 species.
Omitting the peculiar species and those generally distributed in Tropical America, we have thus forty-three that are found in Chontales and in Mexico or the United States, and sixty-one that are found in Chontales and countries lying to the southward. The preponderance of southern forms is not so great as in the birds, but when we reflect on the large number of peculiar species, and that the Longicorns of the Atlantic slope of Costa Rica are yet scarcely known, it appears likely that many of the Chontales species will be found ranging southward across the San Juan river, and that the Insect fauna will be shown to have the same relations as the Bird fauna; for, as the Atlantic forest continues unbroken much further southward than northward, so will the insects peculiar to the forest region have a greater range in that direction.