of the Amazon Valley. 241 



known by having beneath a large orange -yellow spot at the apex of 

 each wing : the colour above and beneath of all the wings is yellow ; 

 the fore wing has a broad black outer border ; the hind wing is gene- 

 rally spotless, but it sometimes has a narrow dusky macular border. 

 The orange spots beneath, however, in some specimens are faint, and 

 in others quite disappear, when the insect becomes almost undistin- 

 guishable from certain $ examples of Nise, Cram. The two sexes 

 differ so much, that I should not have supposed they belonged to 

 the same species if I had not captured them in copula. It is a very 

 common species in thinned parts of the forest and semicultivated 

 places on its borders throughout the Amazon region. There is a 

 nearly allied species found at Rio Janeiro. 



4. T. Flavilla, n. s. 



2- Expans. 1" 7"'-l" 9'". Size and shape of T. Deva. Wings rounded, 

 clear yellow. Above : fore wing clear yellow, the extreme costal edge 

 dusky ; an outer border, broad on the costa, narrowed to the hind angle, 

 multisinuate within, silky violet-black; the base with two short black 

 streaks : hind wing clear yellow, spotless, or with a very slight dusky 

 border. Beneath clear yellow, spotless, except that there are sometimes 

 one or two minute black spots at the end of the hind wing-cell. 



This species differs from all others known to me in the clear spot- 

 less yellow colour of the wings beneath. It is a very common species 

 in the same localities as T. Deva. The description is drawn up from 

 five examples. 



5. T. circumcincta, n. s. 



c?. Expans. 1" 7"'-l" 8'". Wings rounded, yellow. Above : fore wing 

 yellow, the costa narrowly bordered with dusky ; an outer border, very 

 broad on the costa, moderately broad at the hind angle, its inner edge with 

 many very faint sinuatious, silky violet-black : hind wing yellow, with a 

 narrow border from the apex to the anal angle, somewhat regular in 

 width, violet-black. Beneath paler yellow, spotless, except that there is 

 one small black spot at the end of the cell. 



Para, and other localities. I strongly suspect it to be the <3 of T. 

 Flavilla. It is very near T. tenella. Bdv. ; but his description better 

 suits a nearly allied S. Brazilian form which has generally distinct 

 undulated dusky marks across the hind wing beneath. 



6. T. Nise, Cram. 

 $. P. Nise, Cram. 20k.l. 

 This species varies in colour, being sometimes uniformly oehreous- 

 yellow, as represented in Cramer's figure, sometimes of a very pale 



t 2 



