362 RHOPALOCERA. 
the cell and one after it. These form the main divisions of the scheme submitted 
below. 
Regarding the secondary sexual organs of the male much diversity prevails, as might 
be supposed, but one common character pervades the whole, the tegumen being a hood- 
like structure with a setose lateral lobe on either side, below which proceed two strong 
hooks curved at first inwards and then outwards, sometimes overlapping one another. 
The harpagones are very varied in form, as is also the penis; this will be seen from our 
descriptions which follow. We have not ventured to make much use of these characters 
in our scheme of classification; we have, nevertheless, availed ourselves of them in 
grouping some of the genera in their order of sequence. 
Regarding the females, all we have done is to notice certain very definite structures 
in the bursa copulatrix ; these being of a hard chitinous nature have survived the process 
of preparing the specimens ; their shape is various, but they are by no means universally 
present ; their further investigation, as well as the organs to which they are attached, 
must be undertaken from fresh specimens properly prepared for that purpose. 
To return to the question of classification, we should have preferred to have adhered 
the very useful scheme published by Mr. Bates in 1867, now eighteen years ago, but 
the discovery of fresh characters seems to justify our recasting the classification of the 
family. We have, we believe, introduced greater precision in our definitions, and this, 
we hope, we have done without overstraining natural ties. 
It must not be supposed that the characters we have given for the genera below are 
by any means exhaustive ; they are rather intended to supplement those given in the 
‘Genera of Diurnal Lepidoptera’; thus we seldom allude to the shape of the wings or 
the clothing of the palpi or front legs. 
Subfam. NEBEOBIIN A *. 
Secondaries without or with a rudimentary basal nervure. 
EURYGONA. 
Eurygona, Boisduval, Sp. Gén. i. t. 21. f. 3; Westwood, Gen. Diurn. Lep. p. 437. 
The genus Eurygona is characteristic of Tropical America. It contains about ninety 
species, which are spread from Arizona and Southern Mexico to South Brazil, the 
* In this subfamily we include all the Old-World genera of Erycinidew, viz. :—Nemeobius, Dodona, Zemeros, 
Abisara, Stiboges, and Taaila. Also of the New-World genera Helicopis, as well as those mentioned in the 
following text. This subfamily therefore differs from that of Mr. Bates by the addition of Hurygona, Metho- 
nella, Hades, and Helwcopis, and by the subtraction of Alesa, Eurybia, Eunogyra, Mesosemia, Cremna, and 
Hyplilaria. We have not yet discovered satisfactory characters whereby to separate the Old from the New- 
World genera of this subfamily. 
