550 
MR. H. W. BATES ON THE HELICONIDE LEPIDOPTERA 
and marking 
the case of this genus, adaptation seems to be intended. The following 
all the cases of this complex association known to me 
Nicaragua. 
Heliconius Zuleika 
Melinsea Hezia. 
Mechanitis, n. sp. 
New Granada. 
Heliconius Ismenius. 
Melinsea Messatis. 
No Mechanitis. 
Heliconius, n. sp. 
Melinsea, n. sp. 
Mechanitis Menophilus 
East Peru and Bolivia. 
Heliconius, n. sp. 
Melinsea, n. sp. 
Mechanitis Mothone 
The new species mentioned are contained 
the British Museum Collection. 
1. Melinsea Egina, Cramer. 
D 
Ludovica, Cram. Pap. Exot. t. 297 
Upper Amazons. 
Heliconius Pardalinus 
Melinsea Pardalis. 
No Mechanitis. 
Heliconius Aurora 
Melinsea Lucifer. 
No Mechanitis. 
Para. 
Heliconius Sylvana 
Melinsea Egina. 
No Mechanitis. 
Heliconius Numata 
Melinsea Mneme. 
Pernambuco. 
Heliconius Ethra. 
Mechanitis Nessea 
No Melinaea. 
Rio Janeiro. 
Heliconius Eucrate. 
Mechanitis Lysimnia 
No Melinsea. 
This is a common species throughout the Amazon region, and appears to be very con- 
stant in character throughout the whole area. The <$ fore legs are in a more rudimentary 
condition than in other species of the genus, the tibise and tarsi forming simply an 
elongate-conical point at the apex of the femur. It flies, in company with Mechanitis 
Polymnia, Melincea Mneme, Heliconius Sylvana, and H. Nwmata, slowly, amongst the 
lower trees in thinned parts of the forest. 
2. Melin^a Mneme, Linnaeus. 
Papilio Mneme, Linn. Syst. Nat. ii. 756. n. 59. 
j Cram. Pap. Exot. t. 190. f. C. 
Also found at all stations throughout the Amazon region. It is constant in its specific 
characters, with the exception of a frequent aberration in the blending of the black 
