278 RHOPALOCERA. 
The various species inhabit the borders of the forests. 
The costal nervure of the primaries of Cystineura is very much swollen at its proximal 
half; the subcostal emits one branch before the end of the cell, the second at the origin 
of the very short upper discocellular; the middle discocellular is rounded into the lower 
radial, and the lower discocellular is an atrophied nervule meeting the median at the 
origin of the second branch. The front legs of the male have a coxa nearly =femur + tro- 
chanter; the tibia and tarsus are both condensed into a single short joint hardly longer 
than the trochanter. There are faint indications of a suture representing the tibio- 
tarsal joint, and also of a single tarsal joint in some specimens. The front leg of the 
female is well developed, the coxa being about =#% femur-+ trochanter ; the tibia is 
slightly thickened at its distal end and is about =2 femur; the tarsus has the usual 
joints and spines, but there is no terminal claw. The eyes are smooth; the palpi 
slender, the terminal joint >4 the middle joint, which is of uniform width throughout. 
The antenne have 41 joints, whereof about 13 form a moderate club. ‘The secondary 
male sexual organs have a tegumen with a simple central spine, beneath which is a 
spine in the interior of the anal cavity ; the harpagones have two lobes at the end, both 
of which are decurved, and the lower one as well as the ventral surface hairy. 
1. Cystineura amymone. 
Cystineura amymone, Mén. Cat. Mus. Petr. Lep. p. 123, t. 9. f. 67. 
Alis griseo-fuscis, plaga magna ultra cellulam venis divisa albida, posticis fere omnino fuscis fascia maculosa 
transversa indistincta albida et plaga magna ad marginem externum fulva; subtus fulvescenti tinctis, 
maculis omnibus distinctioribus, posticis fascia altera maculosa ad basin notatis. 
Hab. Mexico (Deppe), Presidio, Ventanas (forrer), Oaxaca (Fenochio), Cordova 
(Riimelt), Valladolid in Yucatan (Gaumer); British Honpuras, Corosal (oe) ; 
GuaTeMaLa, Yzabal, Polochic and Motagua valleys, Pacific slope (F. D. G.& O. 8.), San 
Gerénimo, Cahabon (Champion); Honpuras, San Pedro (Whitely); Nicaraaua 
(Delattre 1), Chontales (Belt). 
A common species throughout Central America from Mexico to Nicaragua, but we 
have not yet received specimens from Costa Rica or further south. It exhibits slight 
variation in the intensity of its markings, some specimens being much darker than 
others and having a greater extension of grey; but all have a broad fulvous submarginal 
band near the anal angle of the secondaries, extending nearly to the apex. 
Cystineura amymone is closely allied to C. dorcas of Fabricius; but this species has 
also a patch of fulvous towards the centre of the outer margins of the primaries, which 
is wanting in C. amymone. ‘There are also various species in South America, but in 
most of these the fulvous on the upperside is absent. 
