Mimetic Relationships in the genus HeUconius. 115 



claspers of two forms are illustrated on PI. XVI. They 

 differ from one another considerably, but the differences 

 are just such as to make it difficult to separate them on 

 these structures from metharme. In the latter species the 

 peculiar toothed organ on the inner side of the clasper 

 seems intermediate in form between that of aoede aoede 

 and that of aoede astydamia. Allowance must be made 

 for differences of position, as this organ appears to be 

 movable. The matter will be further considered under 

 the discussion of patterns. 



Xanthocledoformks. 



H. xanthocles, Bates. 



Five subspecies and the typical form are described from 

 various parts of northern S. America. The male claspers 

 are distinctive, those of two forms being shown on PI. X\ I. 

 The most interesting feature is the small, upturned projec- 

 tion from the inside of the clasper, suggesting an alliance 

 with //. hierax, Hew.* The only feature of the wing 

 patterns which would support such a view is the row ol 

 small, almost marginal white spots on the underside of 

 the hind-w ing. 



Egeriformes. 



H. egeria, Hiibn. 



The typical and three subspecies of this large and 

 handsome form have been described from Guiana and 

 North Brazil. The male clasper is illustrated on PI. X\ 1. 

 and could not be confused with that of any other species 

 I have examined, though suggestive of relationship with 

 burneyi catkarinae. 



H. burneyi, Hiibn. 



The typical form and three subspecies range through 

 Guiana, N. Brazil. Peru. Bolivia, and Colombia. I have 

 illustrated the claspers of three forms (PI. XVII) showing 

 a very wide limit of variation, notwithstanding which, the 

 clasper of only one other reputed Bpecies could be contused 

 with them. This is wallacci wcdlacei, PI. XVII, and it is 



* On the clasper alone hecuba, xanthocles, and hierax would 

 appear to be rather difficult to separate. There are certain other 

 differences, however, notably in the shape of the uncus, which 

 enable them to I"- separated. 



