144 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vol. xii, 



Fore wings with two narrow dark-brown lines, the basal one a little nearer the discal spot 

 than the base of the wing, slightly sinuous and curved in on the costa. The outer line somewhat 

 sinuous and irregularly scalloped, beginning on the outer third of the inner edge and ending near 

 the apex. Discal spot of singular shape and appearance; it is rather large, lunate, incurved, 

 about four times as long as wide, and square where it rests on the base of vein III 3 , and pointed 

 at the front end; the membrane is opaque, like thin parchment, with a median impressed line 

 (the discal veins) ; there are no scales upon it, and it is narrowly edged with brown. A small 

 triangular apical black spot, with a few scattered blue scales and still fewer bright Indian red 

 scales, and edged broadly behind with white. Apex and edge of wing clear olive green, base 

 of costa as far as the basal line ash-brown. Hind wings marked like the fore wings and of 

 exactly the same hue, but the extradiscal line is more deeply scalloped; the discal spot is as 

 large as on the fore wings, but more regularly curved at each end. 



Under side of the wings with a reddish brown tinge; discal spots the same shape and struc- 

 ture; extradiscal line more deeply scalloped, and that on the fore wings with oblique scallops. 

 Apical spot about half as large as above. 



Expanse of fore wings, 3 80 mm. 

 Length of a fore wing, d" 37 mm. 

 Breadth of a fore wing, s 17 mm. 

 Length of a hind wing, <? 25 mm. 

 •" Breadth of a hind wing, <? 20 mm. 

 A very conspicuously marked species. 

 Geographical distribution. — Santa Fe de Bogota, Colombia (Mus. de Hist. Nat. Paris). 



SAGANA SEMIOCULATA Felder. 



Sagana semioculata Felder, Reise der Novara, Zool. Theil, Bd. II, Abth. 2, Tab. LXXXVII, fig. 4, 1874. 

 Sagana semioculata Kihby, Syn. Cat. Lep. Het., I [p. 754]. 



Imago. — One 9 . Antennae with short pectinations. Fore wings broad, costa not much 

 arched; apex not sharp, outer edge slightly excavated behind the apex. Hind wings more 

 rounded, less triangular than in s . Discal spots narrow, oval in fore wings, not lunate; in 

 the hind wings oval, about twice as wide as long, the outer side straight, inner side convex or 

 rounded. A basal and extradiscal line. An apical triangular spot with a much smaller one 

 behind it. Extradiscal line on the hind wings much scalloped and accompanied beyond with 

 a series of dark lunules. This is apparently the more primitive and generalized species of the 

 two thus far known. 



Geographical distribution. — Venezuela (Felder). 



Subfamdy Holocerin^e Packard. 



Head of moderate size, rather large; the front rather narrow, narrowing somewhat toward 

 the labial region; vestiture uneven, shaggy; when denuded the front is flat, narrow, about twice 

 as wide across the vertex as at the oral edge. 



Antennas of <? bipectinated, the joints in Henucha numbering 32; the distal fourth fili- 

 form. The pectinations are double, the distal pair very slender, thin and closely appressed to 

 those of the basal pair of the next joint. Antennas of ? well pectinated, nearly as widely as in 

 the s {Henucha and Ludia). 



Palpi short, not very porrect, a little depressed and bushy, not reaching the front (Henucha, 

 Ludia and Holocera). When denuded very small, vestigial, pear-shaped and pressed against 

 the infra-oral region. Maxilla? not visible, obsolete, with no trace unless a microscopic oval 

 process on each side of the mouth be their vestiges. 



Body moderately stout; thorax not very thick, abdomen tapering to the end (Henucha, 

 Holocera). The hind edge of the ninth abdominal tergite is armed with 10 uneven slender 

 acute spines, the shortest ones being those in the middle (Holocera). 



