368 HETEROCERA. 
Pantaleon 1700 feet (Champion); Nicaracua, Chontales (Belt); Panama, Chiriqui® ¢ 
(Arcé, in mus. D.; Ribbe & Trétsch, in mus. Staudinger), Volcan de Chiriqui 2000 to 
3000 feet (Champion).—Sovutu America !; CoLomBra ? *, Manaure, Bogota; VENEZUELA °3 
Bouivia2; Guiana, Demerara4, Paramaribo >®; Amazons 4, Parad ?7; Brazin® 1°, 
Pernambuco, Santa Catarina. 
This species varies to a very great extent in both sexes; and of the seventeen 
examples before me no two of them are exactly alike. J have not the slightest doubt 
that R. evinga, Guén. (= Bruyjas basicincta, Walk.), is the male of FR. albizona. A 
female specimen received from Guatemala has the typical white spots at the apex and 
at the anal angle of the primaries, the white band only being indicated by a few white 
dots on the costal margin and at the end of the cell, and the white band on the 
secondaries almost wanting, but marked by two rows of small white spots. ‘The 
example from Nicaragua is almost entirely brown, excepting a small white spot at the 
end of the cell and those at the apex and anal angle of the primaries, these spots 
being considerably smaller than they are in any other specimen before me. A male 
from Chiriqui in Dr. Staudinger’s collection has the white band of the female marked 
by a white line. 2. amarygma, Guén., has a narrower white band than typical 
f. albizona, and is, without doubt, only a slight variety of that species. 
LETIS. 
Letis, Hiibner, Verz. bek. Schmett. p. 274 (1816); Guénée, Sp. gén. des Lép. vii. p. 145; Walker, 
Cat. xiv. p. 1263. 
Numerous representatives of this genus inhabit Central and South America and the 
Antilles; and a large number have been described, in several cases the sexes as distinct 
species, by various authors. Twelve are now recorded from within the limits of our 
fauna. - 
1. Letis scops. 
Letis scops, Guén. Sp. gén. des Lép. vii. p. 155°; Walk. Cat. xiv. p. 1271’. 
Letis alauda, Guén. Sp. gén. des Lép. vii. p. 154°; Walk. Cat. xiv. p. 1270*; Butl. Trans. Ent. 
Soc. Lond. 1879, p. 49°; Méschl. Verh. zool.-bot. Ges. Wien, 1880, p. 423°; Beitr. zur 
Schmett.-Fauna von Surinam, ii. p. 45’. 
Letis trailii, Butl. Trans. Ent. Soc. Lond. 1879, p- 49°. 
Hab. Mexico, Jalapa (Schaus); Guatemata, Zapote (Champion); Nicaragua, Chon- 
tales (Belt); Costa Rica (Van Patten); Panama, Volcan de Chiriqui 2000 to 6000 feet 
(Champion).—Ecuapor ; Gutana, Paramaribo®’; Amazons® 8, Tapajos?; Brazii?* 4; 
(?) Cuit1®4; Urnucuay, Monte Video!?; TriniDAD; ANTILLES, Jamaica. 
This insect is allied to L. specularis, the type of Hiibner’s genus Letis. It is found 
over a very extended range of country, and is subject to a considerable amount of 
variation in colour, more especially in the female sex. Some specimens have the hind 
