There are seven European genera, each of them represented by a whole series of species connecting different types. In California there are only three of which none is known to contain more than four species. The Atlantic States add some tropical genera to the three genera already obtained in California, viz.: _Neonympha_ Hubner, _Hyphthima_ Hubner, _Debis_ Dbld., and _Calisto_ Hubner. The genus _Calisto_ seems to be confined to subtropical North America; the genus _Neonympha_ spreads in numerous species through the tropics of America, and trespasses only in a few species the _Cancer_; _Hyphthima_ is found in many species in the tropics of the Old World, and it is a very curious circumstance, that one species of this essentially Gerontogeic genus should be found in the Southern States. But the two American species of the genus _Debis_, are even more interesting, for all other species of this genus, are confined to the Indian Archipelago. The metamorphoses of the _Satyrides_, are only with difficulty to be investigated. They feed as far as they are known, on Monocotyledoneous plants, the extra-tropical ones, with one exception perhaps, exclusively on Graminaceous plants. The Caterpillars shun the sunlight and hide themselves in the grass. Some of them bury themselves in the daytime in the ground and feed only at night. The tropical species feeding on Scitaminaceous, Aroideous plants, palms, and arborescent grasses, sport the shady thickets of tropical forests, in whose twilight depths, most of the species are also found in their imago state. Other ones like some of the _Morphonides_, and even some _Nymphalides_ of the tropics, spend their days hidden under the luxuriant foliage of primeval forests and begin their flight only after sunset.