532 MR. H. W. BATES ON THE LEP1DOPTERA 
Var. 1. Same as M. Polymnia, Cram., except that the ground-colour is of a dark orange- 
brown, nearly as in M. Egaensis. 
This variety was numerously represented, and in both the sexes. 
Var. 2. Between var. 1 and M. Egaensis, 
The wings are dark isabella-colour, or orange-brown ; the black stripe along the hind 
margin of the fore wing touches the edge for great part of its length ; and there is a large 
irregular yellow spot, bordered with tawny, in the centre of the black apical part. Hind 
wing of the <s more angular than in M. JPolymnia, the apex being as if truncated. 
Many examples of this variety occurred at Ega. Few were exactly alike ; some approach 
M. Egaensis, and others the var. 1 above described. 
Local var. Mechanitis Mazceus, Hewits. Exot. Butt. Mechanitis, fig. 8. 
This form prevailed at St. Paulo, 260 miles to the west of Ega, in the same way as M. 
Egaensis did in its locality. There is a wide contrast in colour between the two varieties, 
and at a first glance they would be pronounced distinct species. Examples occurred at 
St. Paulo, however, which connected M. Mazceus with M. Polymnia type. The other 
varieties found at the same locality are so numerous that they cannot conveniently be 
described in detail : some are intermediate between Mazceus and the var. 2 of M. Egaensis ; 
others are remarkable for their rich colouring of black, yellow, and orange-brown, the black 
spots at the end of the fore- wing cell forming a belt, which, divides the yellow part into 
two sinuous belts. One (found paired with Mazceus) resembles M. Menophihis (Hewits. 
Exot. Butt. Mechanitis, fig. 3). All of these varieties, however, have the marginal row 
of white spots beneath ; and none agree with the M. Egaensis. The following merits a 
separate name and description, on account of the modified shape of its wings. 
Local var. Mechanitis Olivencia. 
2 . Expanse 2" 10'". Similar in colours to M. Mazceus. Fore wing much shorter, the 
apex being obtuse and the outer margin less oblique, so that the end of the cell is brought 
much nearer to the apex, reducing the extent of the dark-coloured part near the apex : 
orange-tawny ; the costal margin near the base and a broad stripe along fths of the 
posterior margin, touching the edge, black. There is a triangular spot in the basal part 
of the cell, a large quadrate one in the middle, and a large twin spot across the end of 
the cell, also black ; beyond the twin spot there is a short undulated belt of a rather paler 
tawny than the ground-colour, which is yellow near the costa, and bordered exteriorly 
with black, the apical part of the wing beyond this belt being orange-tawny like the 
ground-colour : there is a black spot in the angle between the 1st and 2nd median 
branches, and a twin spot posterior to it, nearer the outer edge, of the same colour. 
Beneath, the same, except that there are three white marginal spots near the apex. 
wing : above, the same as in M. Mazceus ; beneath, the same as above, except that 
the margin is destitute of white spots, or has only a slight indication of them. Body and 
antennae the same as in M. Folymnia and all the varieties of it here described. 
Found in company with the M. Mazams at St. Paulo. It is a variety of M. Folymnia, 
which varies in an important part of structure. 
