518 MR. H. W. BATES ON THE LEPIDOPTERA 



occurs in several other species of Ileliconidae, found in that locality — a curious result of pe- 

 culiar local conditions. Cramer figures a slight variety as the cf of the species (fig. A). 



8. Lycorea Halia, Iliibner. 

 Eueides Halia, Hiibner, Exot. Schmett. 



Found in company with L. Ceres and L. Pasimintia at Para. As I have before 

 remarked, this is the form of Lycorea which prevails in S.E. Brazil. A variety, found 

 also at Para, connects it with L. Ceres, the chief Guianian form, and suggests the 

 conclusion that both the extreme local races or species were one and the same at not a 

 very distant period of time. 



4. Lycorea atergati.s, Dou1)leday. 



L. atergatis. Doubled, and Hewits. Gen. Diurn. Lep. pi. 16. f. 1. 



The figure here quoted was made from a Venezuelan specimen. I did not find the 

 species on the Lower Amazons ; but it was the most abundant form of the genus at Ega, 

 on the upper river. Many of the incUviduals there occurring, however, form a strongly 

 marked variety, in which the ground-colour is dark brown, suffused more or less with 

 l)lackish. Further to the west of Ega, tliis variety is the prevailing form. 



Genus Ituxa, Doubleday. 

 Doubled, and Hewits. Gen. Diurn. Lep. p. 113. 

 The species of this genus, like those of Lycorea, seem to be all geographical forms of 

 one only. But in this instance the segregation of races is complete, whilst in Lycorea 

 we have seen it to be in many of the forms only in process. Three ItiincB are known : 

 one, /. Lamyro, Latr., occurs in New Granada; the second, I. Ilione, Cram., inhabits 

 Guiana and, I believe, Brazil, along the Atlantic coast ; the third, /. Fhenarete, Dbld., is 

 peculiar to Bolivia and tlie Upper Amazons. All three are tolerably distinct in colours 

 and markings. 



Ituna Pu^enarete, Douljleday. 



/. PhdEiiarete, Dbld. and Hewits. Gen. Diurn. Lepid. pi. 17. f. 1. 



I met with one example only, at Tabatinga, Upper Amazons. 



Genus Metuona, Dimbleday. 

 Dbld. and Hewits. Gen. Diurn. Lej). p. 115. 

 Tliis genus, which is so closely allied to the following {Thyrid'ta) that the species of 

 both liavc nlvvays been confounded, is distinguished from it by structural characters, viz. 

 the iiciiiatioii of th(! hind wings and the form of the male fore legs, which are of great 

 Nystcniatic im})ortance in another jiart of this family, but here can scarcely be considered 

 even of generic value. The internal (abdominal) nervure of the hind wing is long, and 



