NEW SOUTH- AMERICAN KIIOPALOCERA. 



263 



region. The form eanides is mimicked by the specimen with 

 increased red rays on the hind wing above. The hind-wing 

 underside, with its rayed pattern and marginal row of white 

 spots, shows the greatest resemblance. It also bears a strong- 

 likeness to Pericopis mimica Feld., a day-flying Hypsid moth, 

 which occurs from Colombia to Pern. In a, lesser degree, the 

 species also resembles two forms of the Nymphaline genus Eresia, 

 represented by the darker specimens of E. perilla Hew. and 

 cornelia Stgr. The diversity* of co-existent mimetic forms, seen 

 in the species of Eresia, is analogous to the wide departure from 

 the normal form now seen to occur in the genus Vila. 



The typical forms of Vila possess a somewhat Ithomiine-like 

 pattern, but more nearly resemble some white-banded forms of 

 Eresia, the likeness being marked on the underside of the hind 

 wing. Ithomiines would probably serve as models for Vila on 

 the winsr, and in such a white-banded association would be 

 included Adelpha epione Godt. Another Adelpha, coryneta Hew., 

 resembles Vila azeca D. & H. on the hind wing below, as also 

 does Eresia clio L. 



We have, therefore, a mimetic association of Vila eueidiformis 

 with Eueides, Eresia, and Pericopis, and another association of 

 Vila azeca with Ithomiine species and the Nymphalines Adelpha 

 and Eresia. It would appear probable that the resemblance of 

 Vila to Ithomiines and Adelpha would be most marked when on 

 the wing, whilst presumably the resemblance on the hind wing 

 below between Vila azeca, Eresia clio, and Adelpha coryneta 

 would be sufficiently marked when at rest. 



No doubt the white-banded Ithomiines, probably of the genus 

 Leucothyris, have served as models, as they are more abundant 

 than the Nymphalines. Adelpha is fairly common, and so are the 

 white Eresia, but Vila is comparatively rare. 



The Female of Polygrapha cyanea G. & S. 

 (PI. I. fig. 2.) 



The male of Polygrapha cyanea Goclm. & Salv. is not rare in 

 collections, but no description of the female seems to have been 

 published. We describe it from the only specimen which we 

 believe to exist in collections. This specimen, which is much 

 damaged, was taken by Mr. W. F. H. Rosenberg's collector, 

 Mr. G. Palmer, at Alpayacu, Rio Pastaza, E. Ecuador, 3000 feet, 

 and was found drowned in a native " Chicha " pot outside a 

 house. The collection containing the specimen was acquired by 

 the late Mr. Herbert Druce. 



Upperside with dark brown ground-colour. Fore wing with 

 yellow-brown oblique band from vein 4 to the inner margin near 

 tornus ; the band is much broader in cellules 2 and 3 and its 

 inner edge is incurved in cellule 2 and in 1 b, the outer edge 

 is evenly curved outwardly ; a pale brownish streak at base of 

 cellule 6, and beyond this the costal area whitish brown, not 



