522 MR. H. W. BATES ON THE LEPIDOPTERA 



invariably associated with D. Rho'eo. Both have a weak, slow flight, and are generally 

 seen in company with Ithomice of various species. 



Genus Callithomia, nov. genus. 



Generic Characters. — Head, palpi, and antenna; same as in Dirccmia ; the long hairy 

 palpi, and their long pointed third joint, being charactei's which distinguish both from 

 Ithomia and its allied genera. Hind wing in the S short, subquadrate, in the 2 elliptical ; 

 in both sexes with the lower disco-cellular straight, rather long, placed at an obtuse 

 angle with the median ; the middle disco-cellular angulated (with a recurrent ner- 

 vule), in the c? very long, bent, and du*ected outwards towards the apex of the wing. 

 Fore tibia? and tarsi in the <S rudimentary, reduced to a small knob at the tip of the 

 femui-; tarsi in the 2 slender, filiform, the joints not l)eing contracted and crowded at 

 the tip. 



The shape of the wings, structure of the head, antenna-, and palpi give this genus 

 very much the aspect of Dlrcemia, from which the neuration of the hind wing amply 

 distinguishes it. In this latter respect, it bears a similar relation to Dirceinia that T//;/- 

 r'tdia does to Methoua. In the hind-wing neuration it resembles also the genus Olyras, 

 but differs from it in the palpi and male fore legs. In colours it differs from Dirceniia, 

 the wings being rendered opake by fulvous-coloured scales, instead of being naked and 

 hyaline. The species are very rare, and seem to be confined to the far interior of 

 Equatorial America : none liave yet l^een noticed by authors. 



1. Callithomia Alexirrhok, n. sp. 



Expanse, c?,2"2"'; ?, 2" 7'". 'i . Forewhuj: above, with a large opakc orange-tawny 

 spot occupying the bnsal third of the wing — a round spot in the middle of the cell, and a 

 line running along the apical part of tlie first median jjranch being black ; to this snceeeds 

 an irregular l)elt of light yellow, semitransparent on its outer edge — the rest of the wing 

 iVom the end of \\w cell IxMiig lilack, with a row of five large, yellowish, semitransparent 

 spots, of which the fourth is placed out of line, near to the outer margin. In tlie 

 2 the apical part of the outer margin has a row of three or four pale spots. Beiieafh, 

 tiic same, except that t here is a marginal row of six large suljtriangular silvery-white 

 spots. 



Hi 1/(1 iciin/ : (ihorc, sul)opake orange-tawny, with a row of foiu- large subrounded l)l;ick 

 spots along the wing Ixdiind tlie cell, of which tlie outermost is very small in the rf , and 

 a mnrginal series of six subtriant^ular black spots, through which, on the edge, shine the 

 white marginal sjjots oi' {he under side. Bciiealh, the same, except that there is a long, 

 subcostal, black stripe and a row of seven silvery-vvhit(> marginal spots. Body black, 

 beneath yellow; collar with two small yellow spots; wing-lapp(>ts eacli with one large 

 spot of llu" same colour. Antenna; pale fulvous, the basal part black. 



1 found two or liircc cxamiiles of this very elegant insect in tiie forest at St. I'aulo, 

 on tiic ri)per Amazons, ilying in company with the UhoDiiw and Ccraliniie of the 

 locality. 



