of the Amazon Valley. 243 



the posterior black stripe of the fore wing above joining the outer 

 border. 



Common in grassy, flowery places at Santarem and other localities. 



10. T. albula, Cram. 

 P. albula, Cram. 27 e. 



This species is 1" 6"'-l" 7'" in expanse. The two sexes are alike ; 

 I have taken many pairs in copula. It is known by its size, by the 

 black outer border of the fore wing terminating obtusely before 

 reaching the hind angle, and by the under-surface being spotless 

 white, except a sulphur tinge at base of the fore wing. The hind 

 wing is generally spotless above, but sometimes it has a narrow black 

 border; the outer border of the fore wing sometimes terminates 

 abruptly. The insect I have seen in collections generally under this 

 name is not the albula of Cramer. It is a very common species in 

 thinned parts of the forest, flying feebly and low over the herbage. 



11. T. marginella, Felder. 

 T. marginella, Felder, Lep. Nov. Colunibise, no. 53. 



This, which appears to be a distinct species, resembles much T. 

 albula : it differs in the black border of the fore wing reaching the 

 hind angle, and in the existence of a black border of moderate width 

 in the hind wing. Taken at Ega. 



12. T. clara, n. s. 

 Expans. 1" 3'". Wings rounded. Above : fore wing white, the costa at 

 the base dusky ; an outer border of moderate breadth, slightly uneven on 

 its inner edge, and terminating in an obtuse point before the hind angle, 

 black : hind wing white, spotless. Beneath : spotless white, tinged with 

 sulphur-yellow at the base of the fore wing. 



This is the species which I have seen in most collections under 

 the name of albula, Cram. It is, however, a much smaller insect, 

 and the posterior termination of the outer black border of the fore 

 wing is different. It was common in the same situations as T. 

 albula. 



13. T. Mana, Boisd. 

 T. Mana, Bdv. Sp. Gen. 681. 49. 



Both sexes of this species are alike in colour and markings, accord- 

 ing to individuals I have taken in copula. It is a rather smaller 

 insect than T. albula, and the wings are rather shorter and broader. 

 Above it has a broad costal dusky border, and the outer black border 



