186 HETEROCERA. 
near the apex to the inner margin near the anal angle (the first dark brown with fine angular-shaped 
white dots on the outer edge, the second a whitish line, and the third a bluish-grey band which joins the 
narrow white line), a black dot on the costal margin near the apex, and several reddish marks close to the 
apex ; secondaries reddish-brown, palest from the base to the middle, the submarginal lines placed as on 
the primaries ; underside of both wings uniform pale drab colour, thickly speckled with minute brown 
dots, an almost central brown band crossing both primaries and secondaries, the discal spots dark brown, 
the submarginal white line much more distinct than above, with two small reddish spots in each half- 
circle of the waved line: head, thorax, abdomen, antenne, and legs pale brown. The female is 
considerably larger than the male, much darker in colour, with all the bands and markings very much 
more distinct (both on the upper and under sides), and the antenne not so deeply pectinated. Expanse, 
3, 6¢ inches; 92, 77 inches. 
Hab. Panama, Volcan de Chiriqui (Arcé, 3, in mus. D. ; Champion, ° ). 
I have named this fine species after Arcé, who discovered it some years ago, and sent 
me two male examples; from that time till Mr. Champion was fortunate enough to 
find a specimen of the female, I had not seen any other than the two original males. 
A. arcet is allied to A. erythrine and A. batesii, and the female closely resembles the 
insect figured by Herrich-Schaffer as Aricia aspasia, but is, I believe, quite distinct 
from either of these species. In the description I have not noticed the very great 
difference in the shape of the hind wings in the two sexes, it is best expressed by the 
figures given. 
Found at rest on a tree-trunk (Persea) in the dense humid forest west of the Volcan 
de Chiriqui, at an elevation of about 4000 feet (Champion). 
3. Arsenura (?) championi, sp.n. (Tab. XVIII. fig. 4.) 
Primaries and secondaries pale fawn-colour, shaded and banded with darker brown; the primaries thickly 
speckled with dark brown dots, a brown line near the base crossing from the costal to the inner 
margin, two narrow dark brown lines at the end of the cell, beyond which the wing is darker brown, a 
submarginal dark brown band bordered on the outer edge with pale fawn-colour and brownish-purple, a 
long black streak on the costal margin near the apex, below which is a large reddish-brown mark ; 
secondaries banded with dark brown, corresponding with the primaries, but much darker in colour; 
underside pale fawn-colour, speckled with dark brown spots, both primaries and secondaries crossed by 
three or four very indistinct narrow brown lines: head, thorax, and abdomen pale fawn-colour; legs dark 
brown; antenne pale yellowish-brown. Expanse 6 inches. 
Hab. Costa Rica (Schenck, in mus. Staudinger); Panama, Volcan de Chiriqui 4000 
feet (Champion). | 
Our figure is taken from the Costa-Rican specimen, which is in fresher condition 
than the one found by Mr. Champion. The figure will better express the shape of the 
wings than a description. ‘The two specimens before me are the only examples I have 
seen of this grand insect ; it is not nearly allied to any described species, Dense 
humid forest west of the Volcan de Chiriqui (Champion). 
DRACONIPTERIS. 
Draconipteris, Hubner, Verz. bek. Schmett. p. 150; Walker, Cat. v. p. 1185. 
Walker places this remarkable genus in the Drepanulide, at the same time stating 
