192 LLOYDS NATURAL HISTORY. 



hind-wings are yellowish beneath, more or less varied with 

 white, and crossed by a broad green band curving from the 

 base towards the hind-margin across the middle of the wing ; 

 there are also green patches branching from or more or less 

 connected with it. 



Another " Orange-Tip " which deserves a passing notice is 

 Eroessa chiknsis (Guerin). It is the only true Orange-Tip in 

 South America, and it is a Chilian species of great rarity, being 

 remarkable for its resemblance to the African genus Callosune. 

 It measures nearly two inches across the fore-wings, which are 

 white, with the apical half of the fore-wings black, closed by a 

 broad orange band, and the hind-wings are spotted with black 

 at the ends of the nervures. On the under side the hind-mar- 

 gin of the fore-wings is spotted with white, and the hind-wings 

 are of a greenish or yellowish-white, with irregular transverse 

 black markings. Structurally it is distinguished from Callosune 

 by the five-branched sub-costal nervure of the fore-wings. 



GENUS TERACOLUS. 



Teracotus, Swainson, Zool. 111. ii. pi. 115 (1823); Butler, Cist. 



Ent.i. pp. 36, 47 (1870); Trimen, South African Butterflies, 



iii. p. 80 (1889); Schatz, Exot. Schmett. ii. p. 72 (1892). 

 PtychopteryX) Wallengren, Lepid. Rhop. Caffr. p. 17 (1857); 



Butler, Lepid. Exot. i. p. 45 (1870) ; id. Cist. Ent. i. pp. 



36, 47 (1870). 

 Thespia, Wallengren, CEfv.Vet. Acad. Forh. Stockh. 1858, p. 77. 



This and the following genera, Callosune, Abais, and Colotis, 

 form a little group peculiar to Africa and South-western Asia 

 as far as India, where they represent the Palsearctic g nus 

 Euchloe. They are very numerous in species, which, though 

 differing very much in outward appearance, present few tan- 

 gible characters by which they can be satisfactorily separated 



