206 LEPIDOPTERA HETEROCERA 
mal, M! usually connate (Pl. 4, Fig.16). c genitalia with uncus bifid, gnathos bluntly pointed, harpe 
simple, penis pestillate, with thorn at the orifice of the aedceeagus and long cornulus; related to SyncAlora. 
Early stages unknown. 
No doubt a highly specialized descendent of Syachlora, convergent towards Hierochthonia, with 
which it shares nearly all characters, but retains the tongue. The presence of a vestigial Q frenulum, 
in spite ot advanced specialization, well illustrates the greater persistence of that organ in the New 
World, on which we commented in our Introduction. 
Type of the genus : Callisteuma fringillata (Schaus) — Aflodes fringillata, Schaus. 
Geographical distribution of species. — 5. I. Brazil. 
1. C. fringillata (Schaus). — Pl. 5, Fig. 2. S. E. Brazil. 
Aplodes fringillata, Schaus, Journ. New York Ent. Soc. Vol. 5, p. 161 (1897). 
Microloxia fringillata, Warren, Novit. Zool. Vol. 7, p. 135 (1900). 
158. GeNUs DYSCHEILIA, DOGNIN 
Dyscheilia. Dognin, Mém. Soc. Ent. Belg. Vol. 18, p. 160 (1911). 
Characters. — Palpus and tongue quite small, aborted. Antenna of 9 bipectinate, the pectina- 
tions well separated (cf unknown). Hindtibia with terminal spurs only. Abdomen not crested. Frenulum 
in 9 wanting. Forewing with SC! free, R! stalked with SC?», R? above middle of DC, M! connate; 
hindwing with SC? long-stalked, R? above middle of DC, M! short-stalked. 
Early stages unknown. 
Only known to us from Dognin's diagnosis, with one or two supplementary characters supplied 
by the author in litt, 
Type of the genus : Dyscheilia inornata, Dognin (1911). 
Geographical distribution of species. — Argentina. 
1. D. inornata, Dognin. Argentina. 
Dyscheilia inornata, Dognin, Mém. Soc. Ent. Belg. Vol. 18, p. 160 (1011). 
I59. GeNUS XANTHOXENA, WARREN 
Xanthoxena, Warren, Novit. Zool. Vol. 7, p. 13o (1900). 
Characters. — Face smooth. Eye small. Palpus in Q moderate, slender, second joint with 
appressed scales, reaching about as far as frons, third joint moderate, distinct (c* unknown). Tongue 
developed. Antenna in Q bipectinate with long branches. Pectus slightly hairy. Femora glabrous. Hind- 
tibia with terminal spurs only. Abdomen not crested. Frenulum in Q wanting, basal expansion of 
hindwing moderate. Forewing broad, with costa arched, apex rounded, termen convex, oblique 
posteriorly, cell short, DC slightly oblique, not incurved, SC! stalked to beyond R!, SC? stalked to well 
beyond SC?, R! stalked, R?from near apex of cell, M! short-stalked; hindwing with apex rounded, 
termen strongly convex, tornus squared, cell rather short, DC rather oblique, C approximated to cell 
to nearly one-half, SC? stalked, R* from near R!, M! stalked. 
Early stages unknown. 
