552 MR. H. W, BATES ON THE HELICONIDE LEPIDOPTERA 



7. Melin.ea Pardalis. 



Mechaniiis Maehis (part), Hewitson, Exot. Butt. Mechanitis, fig. 9. 



Mr. Hewitson cousidcrecl this form to be a variety of M. Ilaelns : both vrere very 

 abundant at Ega, and I did not find them to intermingle ; it will be better, therefore, to 

 keep them apart. The two sexes are alike in colours, as in the vast majority of the Ileli' 

 coiudcc. I did not meet with A[. FardaUs at St. Paulo ; but at Tabatinga, 80 miles further 

 west, it again occurred, not however under precisely the same form as at Ega, but in a 

 modified state, the yellow crossbclt and the spot at the hind angle of the fore wing having 

 liecome of the same dark orange-brown hue as the rest of the wing. The same trans- 

 formation of colour takes place in many species of IleUeoiiidce in travelling from east to 

 west, and I am inclined to think it is due to the direct action of the physical conditions 

 of the localities on the early states of the insects. 



s. Melin.ea Mnasias, Hewitson. 



Mechan/tis Mnasuis, Ilcwits. Exot. Butt. Mechnnttis, fig. 5. 



Found at Para, where it is rare. The species mimics most accurately in colours the 



Ccratlnia Nliioiiid, var. Barll. 



Genus Tithorea, Doubleday. 

 Doubled, and Hewits. Gen. Diurn. Lep. p. 99. 



1. TiTiioitEA IIarmonia, Cramer. 



PupUio Harmonia, Cram. Pap. Exot. t. 190. f. C, 



Tithorea Mei/ara, Doubled, and IIe«its. Gen. Diurn. Lep. pi. 14. fig. 2. 



Cramer's figure was made from an aberrant example, in which, as frequently happens 

 in the Ilclicouldce, the Ijlack central stripe of the hind wing is partially connected with 

 the hind border ; on tliis account Doubleday and other authors have passed it over, and 

 given a new name to the species. The figvuT, however, is a very fair one, and recogni- 

 zable l)y the tricuspid t(-rmination, on the outer border, of the fore-wing central yellow 

 crossbelt, which distinguishes the species from all others. It is fouiul pretty generally 

 throughout the Amazon rt^gion, in the moister parts of the forest, and in company 

 with Mclu/wo JIiie»/e, Ilcchaiiitifi Poli/iiinUi, &c. 



2. TlTUOREA CUPARINA. 



rf ?. Size, .shape, and general coloration of T. ILiniioiiid. Fore w'nifj: dborc, with 

 tli(! basal half orange-tawny, th(! outer edge of this colour running very obliquely from 

 tlie middle of the costa to tlie outer margin ; this is followed liy an irregular and oblique 

 cl(!ar yellow belt wliicli crosses the costal part of tlu? end of the cell aiul tei-minates in an 

 ol)tus(! point in tlie middle of tlic outer margin ; the a])ical part beyond the yelloAV belt is 

 l)lack, and is crossed in the middle l)y three yellow spots ; tlic liasal third of the costa, 

 the medimi nervur'(r to the 1st branch, and the whole of the hind margin are bordered 

 with lilack, bedsides whieli tlien? are three black spots on the disk of the wing, namely, a 

 triangular one in the middle of the cell, one across the end of tlie cell, and one between 



