PANDORA. AGANISTHOS. 301 



entire, rounded. Precostal vein slightly forked at the tip. Postcostal branching at about two sevenths of the 

 length of the Aving from the base, and emitting the upper disco-cellular (which ibrras the slightly curved base 

 of the discoidal vein) at a little distance beyond the branch; lower disco-cellular arising at about the same 

 distance, very slender and oblique, uniting with the median vein at the base of its third branch, and closing 

 the discoidal cell. 



Fore Legs of the male rather elongate, depressed, clothed with rather short loose hairs at the sides and beneath. 

 Tarsi' nearly equal to the tibia in length, exarticulate, and destitute of ungues. 



Middle Leqs of the male very long, scaly. Femur robust, slightly curved, rather longer than the tibia. Tiljite 

 rather compressed near the base, with a patch of plush near the base beneath ; under side with a double row 

 of very minute spines. Spurs very short. Tarsi scaly, equal in length to the tibia, very slightly spined beneath. 

 Ungues slender, curved. Paronychia with its upper division very slender and curved. 



Hind Legs of the male moderately long. 

 Abdomen not very robust, and rather elongate. 



The extremely rare and beautiful insect which forms the type of the present genus has been kindly forwarded to us, for illustration 

 and description in the present work, by M. Boisduval. It is cliiefly on account of the metallic colouring of its upper side, and the still 

 more sj)lendid appearance of its under surfoce (the hind wings being entirely rich crimson), as well as of the closed condition of the 

 discoidal cell in all the wings, and the somewhat falcated tips of the fore wings, that I have placed it in the present situation ; the arrange- 

 ment of the branches of the postcostal vein of the fore wings, however, more nearly resembles that of Agrias than Prepona, difiering 

 also in this respect from Aganisthos. 



The ground colour of the fore wings beneath is black with a blue gloss, a broad white oblique bar running from the costa (beyond 

 the middle) to the middle of the apical margin ; the discoidal cell is marked by several transverse patches of blue and scarlet edged 

 with black, and the body as well as the whole of the hind wings is crimson, the latter with a few slightly indicated blackish spots, 

 especially a subnmrginal row of transverse ones. 



We believe the specimen figured to be unique. 



PANDORA. 



1. Pandora Prola linisdtirn! MS. ; Douh/. fVestw ^ Htirilsoti, Gen. Diiirii. Lrp. pi. xliii. f. 5. 

 Columbia (Mt. Tolynina). 



Genus LXXII. AGANISTHOS. 



Aganisthos Boisduval, Blanchard, E. Doubleday. 

 HiSTORis p. lliibner. 

 Nymphalis God^. 



Body very rolDUst ; wings above not ornamented with metallic spots ; fore wings strongly falcate at tlie tip. 

 Head moderately broad, woolly, scarcely tufted in front. 



Eyes large, naked. 



Labial Palpi obliquely porrected, forming together a short conical frontj the tips elevated above the level of the 

 eyes, with a slight division between them. The upper side of the middle joint bej'ond the middle thickly 

 hairy, and applied to the face ; terminal joint conical. 



Antenna?, scarcely half the lengtli of the body, slender ; terminated by a slender gradually formed but distinct 

 club, occupj'ing about one fourth of the length of the antennae, very delicately keeled beneath. 

 Thorax very robust, oblong, truncated behind, woolly, hind part hairy. 



Fore II 'mr/.s large. The anterior margin much arched; apical angle obtuse. Apical margin two thirds tlie 

 length of the anterior, entire, but very deeply emarginate at a short distance below the apex, giving a strongly 

 falcate appearance to the extremity of the wing. Inner margin nearly straight, and about the same length 

 as the apical margin. Costal vein strong. Postcostal vein with the first and second branches arising beibre 

 the extremity of the discoidal cell ; third branch arising beyond the cell at a little distance before the middle 

 of the wing, running for some distance close to the succeeding portion of the postcostal, but then running 

 close to the costa, and extending to the tip of the wing at the distance of three fourtlis of the wing from the 

 base. The postcostal vein is obliquely deflcxed, throwing off the fourth branch at about four fifths of the length 

 of the wing ; the terminal portion of the vein running to the angle preceding the deep emargination. Upper 

 disco- cellular obsolete ; middle disco-cellular very short, arising at about two fifths of the length of the wing 

 from the base, straight, directed obliquely towards the base of the wing, throwing off a very short spur into 



