260 Mr. W. C. Hewitson on some new species of Butterflies. 



near the tip of the wing are smaller. In all other respects it is 

 the same. The undersides of both species are alike. Expansion 

 2 inches 7 lines. 



In the British Museum, from Bolivia. 



Heterochroa Donysa. PI. XX. fig. 5. 



Wings deep purple-brown, with a narrow central band of white 

 common to both, intersected by black nervules : commencing at 

 the third median nervule of the upper wing and extending to the 

 anal angle of the lower, its first segment small and indefinite, it 

 gradually tends, though very slightly, towards the anal angle of 

 the wing, and thus forms a very obtuse angle with its continuation 

 on the lower. Between its commencement and the tip of the 

 wing is a large, broad, oblong fulvous spot, curved in the direc- 

 tion of the posterior margin of the wing, extending from the ex- 

 treme anterior margin, where it is broadest, to the second me- 

 dian nervule, where it is only separated by a wide line of brown 

 from the first segment of the white band. On the upper wing 

 are two submarginal lines of light brown and a portion of a 

 third, on the lower wing three ; at the anal angle of the lower 

 wing is a rather large fulvous patch and two small deep black 

 spots ; across the cell are the usual black lines. 



Underside rufous ; the white band is continuous from the an- 

 terior margin of the upper wing, indistinct at first and deeply 

 sinuated before it reaches the median nervule ; the fulvous spot 

 is lighter, especially at its edges ; the marginal lines are white, 

 and between two of them at the anal angle of the upper wing is a 

 round black spot ; the disco-cellular of the upper wing is marked 

 by a rufous band, within which is one of lilac, then white, then 

 again rufous. Expansion 2 inches 7 lines. 



From Mexico. In the British Museum and my own collection. 



Heterochroa Fessonia. PL XX. fig. 6. 

 Wings brown with a central band of white, of nearly equal 

 breadth, common to both, extending from the anterior margin of 

 the upper wing to the anal angle of the lower, slightly arched 

 outwards on the upper wing ; half-way between it and the tip of 

 the upper wing is a large irregular fulvous spot, rounded out- 

 wardly, sinuated on its inner margin ; below it, parallel to the 

 margin of both wings, are three indistinct bands of light brown 

 of unequal breadth ; at the anal angle are two small deep black 

 spots, and between them an irregular fulvous patch. Across the 

 cell of the upper wing are fine indistinct lines of black, some of 

 which are prolonged beyond ; across the cell of the lower wing are 

 also four similar black lines. Underside, the outline only of the 

 fulvous spot is indicated by indistinct lines of white ; parallel to 



