XX INTRODUCTION. 
the South-American continent. About 100 species are known, nearly one-third of 
which occur in our region. 
The Hesperiinee we have divided (following Watson) into two groups—the one 
almost exclusively American, the other being generally distributed, though more 
numerously represented in Tropical America than elsewhere. Amongst the genera 
including the largest number of species are Hudamus (which has a very wide 
distribution), Staphylus, Thymele, Pythonides, Telegonus, and Pellicia; a few are 
confined to Mexico and the Southern United States, as Thorybes, Cocceius, Pholisora, 
and Celotes; but the majority are strictly Neotropical, extending northward to 
Guatemala or South Mexico, a few, like Dyscophellus, Paramimus, and Timochreon, 
only reaching the State of Panama. 
The Pamphilinz, as shown by our critical study of them, divide by their sexual . 
characters &c. into a great number of small groups, some monotypic, others including 
two, three, or more species, to which we have reluctantly given generic value. No 
attempt has yet been made to classify the whole of the known South-American forms, 
and a comparison with them cannot therefore very well be made. We have, however, 
traced most of our numerous genera south of Panama, and many of those recorded by 
us from Central America only will no doubt eventually be found represented on the 
southern continent. Of our total number, twenty-two at least also inhabit the 
United States, and some few, Oarisma, Ochlodes, Phycanassa, Atrytonopsis, Stomyles, 
Amblyscirtes, and Mastor, are peculiar to that country and Mexico; the remainder are 
strictly Neotropical, a good many not reaching north of the State of Panama. 
The genera most numerous in species are Thracides, Atrytone (common to the 
tropical and temperate regions of the New World), Butleria (extending southward to 
Chile), Carystus, Eutychide, Megistias, and Prenes, the last-mentioned being very 
widely distributed. The distribution in America of Pamphila (as restricted by 
Watson) is somewhat peculiar, viz., United States, Mexico, and Brazil, the species from 
the two last-mentioned countries being exceedingly closely allied. Pyrrhopygopsis 
in appearance closely resembles Pyrrhopyge and Phocides, but has the neuration &c. 
of the Pamphiline. The most striking Central-American forms of this subfamily 
belong to Thracides, Perichares, Talides, Aides, Orses, Lycas, and Dion, nearly all of 
which are purely Neotropical. 
