264 RHOPALOCERA. 
end of the cell, the second close to the origin of the short upper discocellular ; the 
middle discocellular is slightly curved, its chord standing at right angles to the lower 
radial ; a nerve-rudiment represents the lower discocellular. The front legs of the 
male have a stout coxa, >4 femur-+trochanter; tibia=femur; tarsus (single-jointed) 
=coxa, the femur, tibia, and tarsus are all very slender. The eyes are smooth. 
Antenne with 39 joints, the terminal 9 forming a slender club. The palpi have a very 
short terminal joint, about =} the middle joint in the male, = in the female ; the 
middle joint is slender and of nearly uniform width throughout. The male secondary 
sexual organs have a very short tegumen, blunt and without central spine; the harpa- 
gones have a blunt terminal spine ; below is a short recurved hook ; in addition to these 
there is a strong outwardly curved spine nearly in the middle of the inner surface of 
harpagones. In structure these parts are unlike what we find in the genera usually 
associated with Callizona, and greatly resemble those of Melitwa cinaia. 
2. Callizona acesta. 
Papilio acesta, Linn. Mus. Ulr. p. 2987; Clerck, Ic. Ins. t. 43. f. 37. 
Callizona aceste, Bates, Journ. Ent. ii. p. 212°. 
Trigidia acesta, Aurivill. K. Svensk. Vet.-Ak. Handl, xix. no. 5. p. 98 *. 
Alis fulvis, maculis pagine inferioris perlucentibus, anticis dimidio distali nigro fasciam obliquam flavam et 
alteram maculosam apicalem includente; subtus anticis ut supra, basi vittis nigris notatis et ad apicem 
maculis albidis ornatis, posticis pallide rosaceo-fuscis, lineis transversis et maculis variegatis, illis ad basin 
et marginem internum attingentibus crebrioribus, lineis minutis submarginalibus et inter eas linea fulva 
angulum analem attingente. 
Hab. Nicaragua, Chontales (Belt, Janson) ; Costa Rica (Van Patten), Irazu (Rogers); 
Panama, Bugaba, Chiriqui (Champion), Lion Hill (M‘Leannan).—Sovutn AMERICA to 
the Amazons valley and North Brazil. 
There is but one species of this genus spread over this wide area, which, though 
subject to some variation, does not admit of subdivision. The chief point of variation 
is in the amount of black in the distal portion of the primaries: in most cases it extends 
towards the base so as to isolate a tawny cross band from the rest of the wing; in 
others it is reduced so that the tawny band becomes united with the basal portion of 
the same colour. The width of this tawny band varies, and also its colour, being much 
paler in some individuals than in others. 
Mr. Bates tells us that it is a common insect in the Amazonian forest. It is always 
found about the trunks of trees, settling frequently on the bark with its wings held in 
a perpendicular position. 
Callizona acesta was known to Linneus from specimens in the Museum Ulrice, 
which form the subject of Clerck’s figure. Doctor Aurivilius, in his recent paper upon 
these Linnean types, has given a careful summary of the references to this species 
by early writers. 
