74 RHOPALOCERA. 
North America. In our limits no less than thirty-four species occur, of which twelve 
or thirteen are peculiar to the country, three pass northwards into the United States, 
and the remainder southwards into South America. 
The limits of the genus Huptychia are by no means easy to define; for though its 
members are for the most part small insects, the gradation by size into the genus 
Taygetis is quite imperceptible. Then, again, the hairiness of the eyes, a character 
upon which considerable stress has been laid, is not one that is quite trustworthy, 
many of the larger Taygetes having eyes quite as hairy as most Euptychiw. The palpi, 
too, seem to fail to give any definite distinction between the two genera. In E. squa- 
mistriga, the type of the genus Pindis of R. Felder, the palpi are so hairy that the 
terminal joint is hidden; whilst in most of the other members of the genus the terminal 
joint is plainly visible, long and slender, and directed forwards and upwards from the 
head; but between these extremes many intermediates occur. 
The neuration of the primaries, too, is very variable; and we have not been able to 
satisfy ourselves that by trusting too much to these differences the species can be sorted 
into natural groups. In £. ewrytus, of North America, the first subcostal branch is 
thrown off after the cell in the primaries, a character we have not yet found in any 
southern species. In a good many species the first branch is thrown off before the end 
of the cell, and the second after it. In others the second branch is emitted close to 
the end of the cell; and in others both first and second are emitted before the end of 
the cell. 
The length of the upper discocellular is also variable: in by far the majority of 
species it is quite short; but in /. camerta and its immediate allies it is long; and in 
E. hedemanni it is altogether absent. The former of these has been placed in a 
genus Neonympha, and the latter as Cyllopsis. 
We are hardly prepared to split the genus on such slight and variable characters, 
though this may be necessary at some future day. But to do so a close examination 
of the majority of the species will be necessary, as well as comparison with the surround- 
ing genera. 
In the eight divisions we have used in grouping the various species of Central- 
American HLuptychie we have found apparently slight characters of colour give tolerably 
satisfactory results in our endeavour to define them ; but with these we have associated 
characters drawn from the neuration of the primaries, as well as a few other minor 
points. 
Though these groups would include many South-American species, we are fully 
aware that by no means all these southern forms are represented in Central America ; 
so that, were the whole genus under revision, considerable additions to and modifications 
of our arrangement would become necessary. ‘To do this would carry us beyond the 
scope of this work ; so we have confined our attention to the species occurring within 
the limits of our fauna. 
