522 
MR. H. W 
ably associated with D. Bho'eo. Both have a weak, slow flight, and are generally 
n company with Ithomice of various species. 
both 
Genus Callithomia, nov. genus. 
Generic Characters. — Head, palpi, and antennae same as in Dircenna ; the long hairy 
palpi, and their long pointed third joint, being characters which distinguish both from 
Ithomia and its allied genera. Hind wing in the <? short, subquadrate, in the 2 elliptical ; 
sexes with the lower disco-cellular straight, rather long, placed at an obtuse 
with the median; the middle disco-cellular angulated (with a recurrent ner- 
vule), in the S very long, bent, and directed outwards towards the apex of the wing. 
Fore tibiae and tarsi in the 6 rudimentary, reduced to a small knob at the tip of the 
femur ; tarsi in the 2 slender, filiform, the joints not being contracted and crowded at 
the tip. 
The shape of the wings, structure of the head, antennae, and palpi give this genus 
very much the aspect of Dircenna, from which the neuration of the hind wing amply 
distinguishes it. In this latter respect, it bears a similar relation to Dircenna that Thy- 
ndia does to Methona. 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 Dircenna, 
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 have yet been noticed by authors. 
1. Callithomia Alexirrhoe, n. sp. 
Expanse, 6 , 2" 2!" ; $ , 2" 7'". <f . Fore wing : above, with a large opake orange-tawny 
spot occupying the basal third of the wing— a round spot in the middle of the cell, and a 
line running along the apical part of the first median branch being black ; to this succeeds 
an irregular belt of light yellow, semitransparent on its outer edge— the rest of the wing 
from the end of the cell being black, with a row of five large, yellowish, semitransparent 
spots, of winch the fourth is placed out of line, near to the outer margin. In the 
$ the apical part of the outer margin has a row of three or four pale spots. Beneath, 
the same, except that there is a marginal row of six large subtriangular silvery-white 
spots . 
Bind wing : above, subopake orange-tawny, with a row of four large subrounded black 
spots along the wing behind the ceU, of which the outermost is very small in the <J , and 
a marginal series of six subtriangular black spots, through which, on the edge, shine the 
white marginal spots of the under side. Beneath, the same, except that there is a long, 
subcostal, black stripe and a row of seven silvery-white marginal spots. Body black, 
beneath yellow ; collar with two small yellow spots ; wing-lappets each with one large 
spot of the same colour. Antennae pale fulvous, the basal part black. 
I found two or three examples of this very elegant insect in the forest at St. Paulo, 
on the Upper Amazons, flying in company with the Ithomia and Ceratmice of the 
locality. 
