OF THE AMAZON VALLEY. 
65«.» 
Var. 7. H. TJdalrica, Cramer, I. c. t. 297. f. B. 
" Para " (Cramer). Taken probably somewhere on the banks of t he Louer Amazons, 
as no trace of any of these forms exists at Para. 
These three varieties (5-7) seem to be intermediate 1 between H. Melpomene and H. Vest". 
I once took a $ Erythrcea in copula with a <$ Melpomene. H. Vesta would appear, from 
this, to be descended from the same stock as H. Thelxiope. It ha-, however, receded, 
as a form, further from the common parent than H. Thelxiope, and has acquired a 
much wider range. 
Var. 8. H. Tyche, nob. 
Pore wing as in var. 2, viz., black, with the basal third and a broad belt across the 
middle rosy red, leaving a narrow black intermediate space. The hind wing above and 
beneath is precisely as in H. Thelxiope, 
Taken at Serpa. 
V'ar. 9. H. Hippolyte, nob. 
Pore wing black; the basal fourth and a narrow oblique belt crossing the wing 
beyond the cell, from the costa nearly to the hind angle, rosy red ; there is also a yellow 
r spot on the costa, on the inner side of the red belt, and another obscure one within the 
cell. Beneath, the same. Hind wing, above and beneath, as in H. Thelxiope, 
Serpa and banks of the Tapajos. 
The approximation towards fl. Thelxiope in this and the preceding variety is very 
considerable. 
Var. 10. H. Cybele, Cramer, Pap. Exot. 1. 188. f. A. 
Serpa In this beautiful variety the fore wing has the arrangement of yellow spots 
very similar to that of H. Thelxiope ; but the hind wing is black, as in H. Melpomene, 
with the exception that there is a red spot at the base. 
13. Heliconius Thelxiope, Hiibner. 
Nereis f estiva Thelxiope, Hiibn. Samml. Exot. Schmett. 
Very abundant at Para and on the banks of the Tocantins, also on the Upper Amazons, 
from the mouth of the Madeira to Peru. The geographical position of the complete 
chain of transition-forms just enumerated seems to show that H. Thelxiope originated 
in a variety of H. Melpomene, which was naturally selected out of the many that arose 
in the species on its descending into moist areas, as being better adapted to the humid 
forests of the Amazon plains than the parent form. It varies much in the shape and 
position of the yellow spots of the fore wing, but the most general form is that figured 
by Hiibner. The following are the more important varieties. 
Var. 1. R, Aglaope, Pelder, Wiener Entomologische Monatsschrift, 1862, p. 79. 
Differs from K. Tlielxiope, Hiibner, in having simply a narrow, oblique, slightly curved, 
yellow macular belt, consisting of seven spots, which crosses the fore wing considerably 
beyond the cell. 
XXIII 
4 
