OF THE AMAZON VALLEY. 535 



row of white spots on the fore wing is partly obsolete. Beneath, it wants (like N. Inaclda) 

 the yellow spot of the hind wing at the base of the costa. 



Found, in company with N. Adelphe, on the banks of the Cupari. It is evidently a local 

 modification of N. Inachia, although having a strikingly different appearance through 

 the change in its coloration. It is remarkable that the Cupari form of N. Cyricmassa 

 {N. Aclelplie) should have changed so little, whilst N. Fyrois, the Cupari form of Inaclda, 

 is so considerably modified from its type. 



6. Napeogenes Pharo, Felder. 



Itkomia Pharo, Feld. Wien. Entomologische Monatsschr. 1862, p. 76. 

 Ithomia Inachia, var., Hewitson, Exot. Butt. Ithomia, figs. 143, 144. 



Tabatinga, near the frontier of Peru, Upper Amazons. I believe, with Mr. Hewitson, 

 that it is a variety of N. Inachia, but is a well-marked one, the product of a distinct area 

 and constant in its differential characters ; it merits, therefore, a separate name and 

 mention. I did not meet with it in any other part of the Amazon region, except the 

 locality mentioned above. Dr. Pelder has received it from the Upper P^io Negro. It is 

 similar in colours to the N. sidphurina (the race of N. Inachia peculiar to S. E. Brazil), 

 but differs from it in the broader black borders and the much paler colour with semi- 

 transparency of the discal areas of the wings. 



7. Napeogemes Ercilla, Hewitson. 



Ithomia Ercilla, Hewits. Exot. Butt. Ithomia, fig. 128. 



Pound only at Ponte Boa, on the Upper Amazons. It mimics very curiously in colours 

 and markings a group of Ithomice which are peculiar to the same part of the country, 

 viz., I. JElia, I. IHiuissa, I. Priscilla, and I. Gimilla. It agrees so nearly in all essential 

 characters with N. Inachia, notwithstanding the totally different coloration, that I think 

 there can be no doubt it is another local form of that species. In support of this view, I 

 would adduce that it is the only form of the JV. luacMa-groui^ found in the locality, where 

 some one or other might be expected to occur, from being found always in company 

 with Ithondce where these latter exist abundantly. I found it flying amongst a crowd 

 of the above-named species, within a limited area in the interior of the forest ; it was 

 much rarer than the Ithomice, and quite undistinguishable from them on the wing. 



8. Napeogenes Ithra, Hewitson. 



Ithomia Ithra, Hewits. Exot. Butt. Ithomia, fig. 74. 



Agrees with Inachia in the colour of the body and antenna?, but differs from it totally 

 in the colours of the wings. It lias a remarkable and evidently mimetic resemblance to 

 Ithomia Cymo. Both are peculiar to the neighbourhood of Para — the Ithomia being very 

 abundant, whilst N. Ithra is an extremely rare species. 



9. Napeogenes Corena, Hewitson. 



Ithomia Corena, Hewits. Exot. Butt. Ithomia, fig. 142. 



Pound only at St. Paulo. Agrees with Inachia in the colour of the body and antennae, 

 but is totally different in the coloration of the wings from that and all the allied species 



VOL. XXIII. 4 c 



