324 RHOPALOCERA. 
of the violet hue on the upper surface of the wings, this colour being confined to the 
region within the blue stripe of the fore wings, while in the former species it extends over 
nearly the whole surface of both wings within and beyond the blue stripe. It also 
wants the tawny patch on the underside of the primaries which exists in P. demodice. 
Mr. Bates says that the blue costal spots are also wanting; but to this we attach 
little importance, as it is not a constant character, since we find them faintly indicated 
in one of our Colombian, and more fully developed in some of our Guatemalan speci- 
mens. Examples from this latter country slightly differ, however, from Colombian in a 
still less extension of the purple coloration. In the females the purple hue is absent. 
Our figure represents a male from the State of Panama. 
AGANISTHOS. 
Aganisthos, Boisduval & Leconte, Lép. Am. Sept. p. 194 (1838); West. Gen. Diurn. Lep. p. 301. 
A single species represents this genus, and is very widely distributed throughout 
the tropics, from Mexico to Brazil. It is also found in Florida, and in a slightly 
modified form in some of the Antilles. 
Aganisthos orion is an insect of powerful flight, and in this respect resembles the 
members of Prepona. 
The wings are entire without projections, the subcostal nervure of the primaries 
emits two branches before the end of the cell, the third branch running for a long 
distance parallel to the subcostal before diverging to the costa. The upper disco- 
cellular is short, the middle bent in the centre, the lower is absent, but an atrophied 
spur a little beyond the submedian branch shows its position; the cell of the secondaries 
is open. The front legs of the male have a stout coxa=2 femur-+ trochanter; tibia< 
femur; tarsus=} tibia; terminal joint of the palpi long=} middle joint, which is 
slightly swollen at the distal end. Antenne with 52 joints, of which 13 form a mode- 
rate club. Of the male secondary organs the tegumen has a simple, slightly depressed 
central spine, and two strong dependent central spines directed outwards ; the harpagones 
are turned upwards at the end, on the inside of which is a strong, upturned spine, and 
on the ventral edge a recurved notch. 
1. Aganisthos orion. 
Papilio orion, Fabr. Syst. Ent. p. 4851. 
Aganisthos orion, Boisd. & Lec. Lép. Am. Sept. p. 195, t. 52°; Bates, Journ. Ent. ii. p. 335°; 
Boisd. Lép. Guat. p. 53‘; Strecker, Butt. N. Am. p. 146°. 
Papilio odius, Fabr. Syst. Ent. p. 457°. 
Aganisthos odius, Butl. & Druce, P. Z. S. 1874, p. 341”. 
Papilio danaé, Cr. Pap. Ex. t. 84. f. A, B®. 
Alis fusco-nigris, anticis litura a basi ultra cellulam extendente ad marginem externum obtusum fulva, 
