532 MR. H. W. BATES ON THE LEPIDOPTERA 



Var. 1. Same as 31. Polijmnia, Cram., except that tlie grovmd-colour is of a dark orange- 

 brown, nearly as in M. Egaensis. 

 This variety was mimerously represented, and in both the sexes. 



Var. 2. Between var. 1 and 31. Ugaensis. 



The wings are dark isabella-colour, or orange-brown ; the black stripe along the hiad 

 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 6 more angular than in 31. Fohjmnia, the apex being as if truncated. 



Many examples of this variety occurred at Ega. Few were exactly alike ; some approach 

 31. Egaensis, and others the var. 1 above described. 



Local var. MeclianiUs 3£az(Bus, Ilewits. Exot. Butt. 3Iechanitis, fig. 8. 



This form prevailed at St. Paulo, 260 miles to the west of Ega, in the same way as 31. 

 JEJgaensis 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 3£. 3fazcBus with 3£. Folymnia type. The other 

 varieties found at the same locality are so numerous that they cannot conveniently be 

 described in detail : some are intermediate between 3I((zcbus and the var. 2 of 31. 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 3IascBus) resembles 31. 3Ienopliilus (Ilewits. 

 Exot. Butt. 3Iechcmiiis, fig. 3). All of these varieties, however, have the marginal row 

 of white spots beneath ; and none agree with the 31. Egaensis. The following merits a 

 separate name and description, on account of the modified shape of its wings. 



Local var. 3Iechanitis OUvencia. 



2 . Expanse 2" 10'". Similar in colours to 31. 3Iaz(Bus. Pore 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 f ths 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 

 o-round-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. 



Sing wing : above, the same as in 31. 3Iazceiis ; beneath, the same as above, except that 

 the margin is destitute of white spots, or has only a slight indication of them. Body and 

 antennse the same as in 31. Fohjmnia and all the varieties of it here described. 



Pound in company with the Jf. Mazism at St. Paulo. It is a variety of 3f. Folymnia, 

 which varies in an important part of structure. 



