284 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
belong to the Sylvanus group ; among them may be mentioned, 
in addition to those already spoken of, Heliconius numata, which 
resembles Melinaea mneme and Tithorea harmonia; H. zuleica, which 
resembles a Mechanitis and is a good copy of Melinaea hezia; and 
H. metalilis, which is said to mimic Melinaea lilis ; there are also 
striking resemblances between 
H. aurora and Melinaea lucifer ; 
H. eucrate and Mechanitis lysimnia; 
H. hecuba and Tithorea bonplandii; 
H. formosus and Tithorea penthias ; 
H. telchina and Melinaea imitata; 
H. messene and Melinaea mesenina; 
H. hecalesia and Tithorea hecalesina; 
H. ethra and Mechanitis nesaea; 
H. pardalinus and Melinaea pardalis; 
H. ismenius and Melinaea messatis. 
Most remarkable of all perhaps is the close resemblance between 
Heliconius aristiona, Mechanitis methone, and Ithomia fallax of 
Staudinger. In fact, Staudinger states in his “ Exotische Schmet- 
terlinge ” that he hesitated for some time to describe Ithomia fallax 
on account of its close resemblance to Hewitson’s Mechanitis methone. 
Good lists of the Heliconidae which are said to mimic one another 
are given by Wallace (’89, p. 250, 251), and by Haase (’93 a , p. 
146, 147). 
(3) The Three Color-Types in the Genus Eueides. In the 
genus Eueides we meet with three color-types represented by 
E. aliphera, E. thales, and E. cleobaea. These insects are dis¬ 
tinctly smaller than the species of the genus Heliconius, and the 
yellow spots upon their primaries are more ocherous in color than 
in Heliconius. E. aliphera (Plate 6 , Fig. 77) represents the most 
highly specialized color-type. Eueides mereaui (Fig. 76), however, 
is a good connecting link between the color-patterns of E. aliphera 
and E. thales (Fig. 75), and E. thales is almost identical in color- 
pattern with Heliconius vesta (Fig. 74). 
The other type of Eueides is represented by E. cleobaea, E. 
dianasa, E. isabella, etc. (Plate 6 , Fig. 78, and Plate 8 , Fig. 93). 
These resemble the Sylvanus groujo of Heliconius or various Melinaeas 
and Mechanitis. 
(4) Detailed Discussion of Plates 5 - 8 . Plate 5 is intended 
to illustrate the types of coloration found in the Antioclius and 
Erato groups of the genus Heliconius. In H. sara (Fig. 61) the 
wings are suffused with a dark blue iridescence, and some narrow 
yellow bands of color are found upon the primaries. In H. antiochus 
(Fig. 62) we find similar bands of color upon the primaries, but 
they are changed to white. H. antiochus may have descended 
