372 HETEROCERA. 
9. Letis buteo. 
Letis buteo, Guén. Sp. gén. des Lép. vii. p. 1521; Walk. Cat. xiv. p. 1270*; Méschl. Verh. zool.- 
bot. Ges. Wien, 1880, p. 423°; Beitr. zur Schmett.-Fauna von Surinam, iu. p. 45 * 
Letis vittifera, Walk. Cat. xiv. p. 1273°. 
Letis integra, Walk. Cat. xiv. p. 1273°; Butl. Trans. Ent. Soc. Lond. 1879, p. 49°. 
Letis albicans, Walk. Cat. xiv. p. 1274°. 
Syrnia letiformis, Guén. Sp. gén. des Lép. vii. p. 158°; Walk. Cat. xiv. p. 1278". 
Hab. Muxico, Cordova (Riimeli), Jalapa (Schaus), Coatepec (Brooks), Omealca near 
Orizaba (If. Trujillo), Mexico city (Boucard, in mus. D.); GuaTemMaa, San Ger6énimo, 
Volcan de Atitlan 2500 to 3500 feet (Champion) ; Nicaracua, Chontales (Belt); Costa 
Rica (Gabb, in mus. D.); Panama, Chiriqui (Arcé, in mus. D.), Volcan de Chiriqui 2000 
to 3000 feet (Champion).—VeunezveLa®; Guiana, Surinam 34, Cayenne ® 1°, Demerara !° ; 
Amazons"!0, Tabatinga; Braziu!2, Pernambuco 2, Rio Janeiro ®°; TRiIniDaD. 
This widely-distributed insect appears to be fairly common in most of the above- 
mentioned localities. It is subject to great variation in colour, and has been described 
under no less than five different names; but with the large series of specimens before 
me, including those in the National Collection and Walker’s types °° from Mr. Fry’s 
collection (now in the possession of Mr. Butler, who has kindly allowed me to examine 
them), I am quite unable to recognize more than one variable species. Letis albicans, 
Walk., is nothing but a bleached example of Z. dbuteo. So tar as the numerous 
specimens before me show, the insect is not constant either in colour or marking in 
any one locality. ‘The underside of the wings shows very little variation, though that 
of the female is generally rather darker than that of the male; it is, however, more 
highly coloured in the examples from Costa Rica and the State of Panama than in 
those from Mexico, Guatemala, or Brazil. 
10. Letis cortex. | 
Letis cortex, Guén. Sp. gén. des Lép. vii. p. 152, Noct. t. 17. f.1(9)?; Walk. Cat. xiv. p. 1270’. 
Hab. Mexico, Cordova (mus. Staudinger).—Braziu ! 2. 
The specimen from Cordova under this name in Dr. Staudinger’s collection is a 
male. It is not very like Guénée’s indifferent figure of the female of L. cortex; but 
the latter is represented with an imaginary body which is erroneously coloured yellow. 
11. Letis confundens. 
Syrnia confundens, Walk. Cat. xiv. p. 1279". 
Letis confundens, Butl. Trans. Ent. Soc. Lond. 1879, p. 50. 
Hab. Mexico, Jalapa, Paso de San Juan (Schaus).—Co.tomBia, Bogota; AMAZONS?, 
Para; West coast oF AMERICA!; ‘TRINIDAD. 
The specimens in Mr. Schaus’s collection are the only ones we have seen from 
Central America. 
