374 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 113 
so remarkable a form that it seems desirable to indicate its presence 
as a feature of the Central American fauna.’”’ In addition to the 
abdomen, which very fortunately was intact, the type consists of the 
right forewing and left hind wing, both labial palpi (partly denuded), 
part of one antenna, and one leg. 
In view of the condition of the specimen, Walsingham’s diagnosis is 
remarkably accurate. Inasmuch as the type (which I have examined) 
was in such poor condition, it follows that the generic description 
contained a few inaccuracies and some omissions. Despite the 
few inadequacies of the original diagnosis, Walsingham’s figure is 
sufficiently accurate to permit easy identification of his genus. 
Following is an emended description: 
Genus Homoeoprepes Walsingham 
Homoeoprepes Walsingham, 1909, in Godman and Salvin, Biologia Centrali- 
Americana, vol. 42 (Lepidoptera-Heterocera vol. 4), p. 10, fig. 4. (Type of 
genus: Homoeoprepes trochiloides Walsingham, by monotypy). 
Homoeoprepes Walsingham, Fletcher, 1929, Mem. Dep. Agric. in India, vol. 11, 
pp. 111, 142 (as a synonym of Mompha Hiibner, 1826). 
Antenna pubescent, about four-fifths the length of forewing; scape 
with well-developed pecten. Labial palpus long, recurved; second 
segment somewhat thickened, slightly roughened in front; third 
segment nearly as long as second, slender, acute. Head smooth with 
erect fan of scales from each side meeting along crown; tongue well 
developed, heavily scaled; maxillary palpus moderately well developed; 
ocellus absent. Hind tibia long, slender, moderately clothed with 
hairlike scales above. 
Forewing elongate, with 12 veins; 1c well preserved at margin; 2, 
3, and 4 from angle of cell; 3 and 4 connate or stalked; 5 well separated 
from 4; 6 obsolete but well preserved at margin; 7 and 8 stalked, both 
to costa, 7 very weak except at margin; 9 near or connate with the 
stalk of 7 and 8; 10 from near outer end of cell; 11 from before middle 
of cell. Hind wing elongate, apex rounded or bluntly pointed, with 8 
veins; 2, 3, and 4remote; 5 and 6 stalked; 7 separate; 8 short, scarcely 
separate from costal edge. Frenulum bristles 2 in female, not 3 as 
illustrated by Walsingham. First abdominal sternite of male with 
eversible sac, lined with specialized scales. 
Male genitalia with uncus absent; gnathos divided; socii present, 
minute. Female genitalia with two signa. 
There is a very close affinity between Homoeoprepes and Nanodacna 
Clarke (in press), the latter described from the Juan Fernandez Islands, 
off the coast of Chile. Homoeoprepes differs from Nanodacna by having 
vein 5 of the forewing distant from vein 4; vein 7 is obsolete except at 
