PIERELLA. 205 



I. Hetvera Group. 

 These are broad-winged Butterflies, peculiar to Tropical 

 America, and measuring from two to three inches across the 

 wings. The genera CWnvrias, Hiibner, and Hetcera, Fabricius, 

 include the only transparent-winged species among the Saty- 

 rince; the hind-wings are usually marked with one or two ocelli, 

 and bordered, either with a festooned brown band, or with rose- 

 colour or purple. The other genera, Pierella and Antirrlnea, 

 Hiibner, are opaque, and sometimes sub-caudate ; in Antirrhcza 

 there are usually rather large sub-marginal spots or eyes. As 

 an example of this group we have figured a species of the 



GENUS PIERELLA. 

 Hcetera, sect. 2, Picrella, Westwood, Gen. Diurn. Lepid., p. 



365(1851)- 



Pierella, Butler, Ent. M. Mag., iv., p. 195 (1S6S); Schatz and 

 Rober, Exot. Schmett, ii., p. 198 (1889). 



The type is Pap ilia nereis, Drury, 111. Exot. Ent., hi., pi. 35, 

 fig- 2 > 3 O782). It is a thinly-scaled brown Butterfly, two and 

 a half inches in expanse, with the outer half of the hind-wings 

 tawny, marked with two eyes, and bordered within with a 

 white band, much expanded in the middle ; on the fore-wings 

 is a much narrower oblique band. It is common in South 

 America. 



Pierella is the most extensive genus of the exclusively 

 Tropical-American group to which the transparent-winged 

 genera, Cithccrias and Hetcera belong. 



The species of Pierella measure from two to three inches 

 across the wings, which are broad and rounded, opaque, 

 though sometimes rather thinly scaled, and the hind-wings 

 are nearly as broad as long, more or less quadrate, usually 

 with a slight projection on the hind-margin opposite to the 

 anal angle. The wings are brown, sometimes with a slight 



