115 



This species comes from Brazil, and expands about i j inch. 



" Male. Greenish-blue. Head and thorax with an aeneous 

 tinge. Palpi short, slender, decumbent ; third joint minute, 

 lanceolate. Antennae moderately pectinated. Abdomen extend- 

 ing rather beyond the hind-wings ; sexualia very small. Legs 

 smooth ; spurs short. Fore-wings rather narrow, rounded at 

 the tips, obliquely tinged with aeneous at the base and about 

 the tips. Hind-wings black, whitish along the costa, hardly 

 more than half the length of the fore-wings ; a broad crimson 

 lanceolate streak extending from the disc to the exterior border, 

 which is also crimson." ( Walker.) 



FAMILY XIII. ARCTIIM). 



Egg. Smooth, globular. 



Larva. Clothed with long shaggy hair, or tufted; sixteen 

 legs ; generally feeding on low plants. 



Pupa. Enclosed in a cocoon. 



Imago. With ocelli; the antennae sometimes pectinated in 

 the male. Body stout, rather short, more or less hairy; collar 

 well developed. Wings generally brightly coloured and en- 

 tire. On the fore-wings the lowest discoidal nervule is generally 

 stalked with the upper median nervule, making the median ner- 

 vule appear to be four-branched ; and on the hind-wings the 

 costal nervure, which in the Zyg&nida. is often practically non- 

 existent, is thrown off from the sub-costal considerably before 

 the cell. The fore-wings are generally oval, and the hind-wings 

 rounded. The hind-wings are sometimes lobate, but never 

 tailed, and have usually two sub-median nervures. In one 

 or two genera the wings of the female are more or less rudi- 

 mentary. Some species fly by day. 



The Tiger Moths may be divided into several Sub-families, 

 which I will now discuss more in detail. 



i 2 



