OF THE AMAZON VALLEY. 523 



2. Callithomia Zeuxippe, n. sp. 



S. Expanse 2" 6'". Very similar to the preceding. It differs in having the fore 

 wing, the base of the costa, and the posterior margin broadly blackish : the apical 

 part of the wing is brown, the margins of the nervures, at the end of the cell, being 

 reddish ; the row of pale spots across this part is reduced in number to three. Beneath, 

 the marginal row of pale spots in both wings is clear yellow, instead of silvery white as 

 in C. AlexirrJioe. The neuration of the hind wing is slightly different from that of Alexir- 

 rhoe, inasmuch as the upper radial is brought much nearer the subcostal, and the upper 

 disco- cellular is very minute. 



One example taken on the banks of the Cupari, an affluent of the Tapajos. 



3. Callithomia Thorxax, n. sp. 



S . Expanse 2" 10'". Wings elongate, orange-tawny. Fore wing : above, with a large, 

 rounded spot in the middle of the cell, the base of the costa, and the whole of the hind 

 margin black; the apical third is also blackish, leaving a submarginal row of six 

 triangular spots and the edges of the nervures at the end of the cell orange-tawny ; 

 there is also a subapical row of four elongate, semihyaline spots. Beneatli, the same, 

 except that the submarginal row of fulvous spots is expanded into an irregular belt, and 

 that there is an interrupted row of minute yellowish spots on the extreme outer margin. 



JSind icing : above, with a row of four subquadrate spots along the wing, close behind 

 tlie cell ; the margins are spotless. Beneath, the same, except that there is a broad sub- 

 costal black stripe, and a fifth spot added to the central series ; the black stripe curves 

 at the end, so as to meet the line of spots ; the hind margin, towards the anal angle, has 

 a row of four whitish spots. 



Body and antenna? the same as in the two preceding species. The neuration of the 

 hind wing is different from that of the preceding, inasmuch as the upper radial appears 

 as a branch of the subcostal after the cell. 



A single example taken at Tabatinga, on the frontier of Peru. 



Genus Ceratinia (Hiibn.), Doubleday. 



Doubld. and Hevvits. Gen. Diurn. Lepid. p. 127. 



This genus, which Doubleday thought most convenient to treat as a section of Ithomia, 

 forms part of a group of genera or subgenera (comprising Ceratinia, Napeogenes, Oleria, 

 Mechanitis, Sais, Ithomia, Symenitis) which agree in their palpi being destitute of 

 hairs in front, in their terminal joint being short, very slender, pointed, and projecting 

 from the forehead, and in the antennaj being somewhat elongate, only slightly and very 

 gradually thickened towards their tips. These genera or subgenera, however (at least, 

 such of them as I think it will be advantageous, for the sake of clearness, to adopt), differ 

 from each other greatly in the neuration of the hind wings. 



Ceratinia has the hind wing elongated in both sexes. In the male, the lower disco- 

 cellular forms a very obtuse angle with the median, is angulated, and emits a recurrent 

 nervule near or close to the junction of the lower radial, the middle disco-cellular being 



