EUCHROMIA. 269 



m. Wings with luteous or yellow spots. 



n. Fore wings not marked with blue. ^ 



o. Abdomen not metallic. 

 p. Abdomen with many bands. 



q. Fore wings with two spots and a streak. ferox. 



qq. Fore wings with five dots. ipomaeae. 



mm. Wings with white or limpid spots. 



0. Hind wings limpid, black margined. fenestrata. 

 oo. Hind wings with two or more spots. 



p. Fore wings with six white spots. vulcanus. 



pp. Fore wings with three white spots. subcyanea. 



Z\ General color black, with golden green stripes or rows of spots. An- 

 tennae pectinated. 



tn. Thorax with green streaks and dots. 



n. Legs black. Interrupta. 



Z 4 . Body short. Antennae pectinated. Wings shorter and broader than 



preceding groups and opaque. 

 m. Hind wings with a hyaline stripe. 



n. Abdomen banded with yellow. ventralis. 



nn. Abdomen with glittering green spots. quadrigutta. 



G G. Hind tibiae ciliated. 



f. Color black. plumipes. 



ti. Color pale. pretus. 



CC. General structure like that of Bombycidcs. 

 d. Body not metallic. 



f. Wings with various shades of brown and white or fawn color. 

 y. Hind wings blue. 



Ti. Abdomen luteous. dryas. 



gy. Hind wings not blue. 

 h. Abdomen brown or black. 



1. Hind wings not or hardly limpid towards the base. 



j. Fore wings with cuneiform marks. Sylvius. 



Group Empyreuma. 

 Empyreuma Hubner. Verz. Schmett. 120. 



Body metallic, rather long, spotted, and scarcely hairy. An- 

 tennae setaceous, much more than half the length of the body, 

 thickly and rather deeply pectinated to the tips. Wings long, 

 moderately broad, wholly opaque and squamose, not spotted. 

 Hind wings not angular. Abdomen nearly linear, not petiolated. 

 Legs stout, not plumose. Tibiae with short spurs. This group 

 approaches nearest to Zygaena in its form and in the color of its 

 wings. 



