364 SATYRIDJi:. 



norrected in front to about the length of the head, thickly clothed with scaly hairs, the front forming a pointed 

 rido-e ; the hind edge not furnished in the middle with a tuft of hairs resting on the face ; terramal jomt small, 



Antmn^not more than two fifths of the length of the fore wings, slender, with the joints distinct- terminated by 



a gradually formed, very much elongated, and slender club, with the joints much shortened, and scarcely 



distinct. 



TnOEAX short, oval, finely hirsute. r, ^ ■, ■ ^ ^ ^ v,i*- 



Fore Winqs lar-^e, elongate, subtriangularly ovate, often diaphanous. Costal margm moderately arched ; tip 



rounded Apical margin two thirds of the length of the costal, convex, entire. Inner margm half the length 



of the costal, generally straight. Costal vein with an elongated swelling at the base extendmg to about 



two thirds of the length of the costa, rather beyond the anterior extremity of the discoidal cell. iost- 



costal vein with its branches free ; the first and second arising considerably beyond the middle ot the wing, 



before the extremity of tlie discoidal cell ; third branch arising halfway between the latter and the tip of the 



win<^ • fourth branch arising half way between the base of the third and the tip of the wmg, and extending to 



the tip : the terminal part of the vein extending to the apical margin below the tip. Upper disco-cellular vein 



obliterated : middle disco-cellular arising at the distance of three fifths of the length of the wing, near y 



straight, transverse: lower disco-cellular of about equal length to the middle one, also transverse, but shghtly 



ano-ukted at the base; uniting with the third branch of the median vein at a considerable distance from the 



origin of the latter, which is strongly angulated at the place of junction, the discoidal cell being thus closed at 



some distance beyond the middle of the wing. Third branch of the median vein beyond the place of junction, 



as well as the first and second branches, straight ; the base of the median vein having a small swelling on its 



posterior ed<Te, wliich is thus brought into contact mth the dilated and curved base of the submedian vein. 



The anal orlnterual vein very short, and forming a smaU oval cell at the inner base of the wmg by its junction 



with the submedian. , . , , • c ^\ ^\ • ^ \ u r +1, 



Tlmd Winqs elongate-obovate, often more or less transparent, and with the extremity of the third branch ot the 

 median vein of^en prolonged into an angulated or tailed projection. Precostal vein very short, forming a smdl 

 erect spur. Costal vein slender, curved, and running close to the costa. Postcostal vein very much arched, 

 so that its basal half in the typical species runs almost in contact with the costa vein, whence it forms a 

 curved hne (in conjunction with the upper and lower disco-cellular veins) to the middle of the wmg ; the lower 

 unitinc. with the median vein exactly at the base of the third vein of the latter: the first branch of the 

 postcoital vein arising tar from the base, and much arched, extending to the outer angle of the mng. llie 

 two disco-cellular veins are of nearly equal length, and straight ; closing the discoidal cell at about half the 

 leno-th of the wing. Third branch of the median vein much curved at its basal part. 

 Fore Leqs of the male extremely slender, small, and delicate, not forming a thick brush. The tarsus of equal 

 thickness with, but not half the length of, the tibia, which is as long as the fc-mur. Fot-e Legs of the female 

 considerably more elongate, but slender; tibia not more than two thirds of the length of the femur, iarsus 

 nearly equal in length to the tibia, gradually thickening to the tip, which is obliquely truncate, with several 

 acute spines indicating the outer joints. _ 1 ^ rr • 



Four Hind Leqs long, slender, finely scaly. The tibia beneath with but few spines ; tibial spurs very short, iarsi 

 with the basal joint as long as the four following united, with several rows of fine slender spines beneath and 

 at the sides. Ungues small, very much curved and acute, not bifid. Paronychia minute. 

 Abdomen slender and elongated. 



This is a very conspicuous genus of butterflies, arising from the diaphanous condition of the wings in the typical species, and in the 



peculiar markings of others. Tiie characters, also, of the genus exhibit several interesting particulars: the slightly hairy palpi and 



the extremely delicate fore legs of the male, the very much curved base of the postcostal vein of the hind wings, causing^the discoida cell 



to extend nearly to the costa, the obliterated condition of the upper disco-cellular vein of the fore wings in the type, H. 1 icra, and the 



orio-in of the anterior discoidal vein from the postcostal one at some little distance beyond the extremity of the discoidal cell, are worthy 



of notice. In H. Esmeralda and Andromeda, the lower disco-cellular vein of the hind wings is united to the third branch otthe 



median vein at about the same distance from the base of the latter as its own length ; thereby causing the discoidal cell ot_ these wings 



to be more ren-ulariy ovate at its extremity, with the branches which extend from it radiating more regularly. In H. ^^ereis, the upper 



discoidal vein'lf the fore wings arises at the junction of the middle disco-cellular with the postcostal (the upper disco-cellular being here 



also obliterated), whilst the lower disco-cellular vein of the hind wings joins the median vein halfway between the origin ot the hrst 



and second branches; and in II. Dyndimene and Lena it joins it even nearer to the origin of the first branch, whereby the discoitla 



cell in these wino-s is greatly abbreviated. In the latter species, the lower disco-cellular vein of the fore wings is more oblique, as well 



as more an-ulated at the base. This species, in its brown fore wings traversed by a paler straight fascia, and its brown hind wings 



marked with numerous blue and white spots, as well as produced into a tail in the middle of the hind margin appears to me to render 



necessary the introduction into the genus of P. Philoctetes and several other species. P. Philoctetes, indeed, has much o the general 



appearance of II. Lena and Uracoutis. Its fore wings, however, are somewhat convex along the apical margin ; whilst the inner 



margin is greatly dilated in the males. Probably owing to the greater width of the wing, the upper disco-cellu ar vein reappears, but 



is very short ; the middle and lower ones arc also much more oblique, uniting into a somewhat c/2 shaj.e, the middle one being concave 



and the lower one convex. The most curious part of the wing, however, consists of the large patch ot curved hairs on the under side, 



between the median and submedian veins, which latter is singulariy sinuated in the middle to make way tor this patch, lie hind 



wings in this species diflilr from all the preceding in havin- the basal portion of the postcostal vein straight, so that the discoidal cell is 



only of the ordinary width. II. Archsea has nearly similar general characters, ))ut its hind wings arc not tailed, the fore wings ot the 



male have a still larger tuft of hairs beneath, and the submedian vein forms a large sweeping curve, its tip directed to the middle ot the 



