PROSERPINUS. 153 



angle; tip acuminated, the hind margin entire and obliquely con- 

 vex from the tip to the medio-posterior interspace, where it is 

 angularly indented; the inner angle salient and the inner margin 

 concave above it. Hind wings rather short, obtusely rounded at 

 the tip and the hind margin entire. Male. — Antennae finely cili- 

 ferous. Female. — Antenna simple. 



Larva tapers anteriorly from the third segment, body cylindrical, 

 head small and the eleventh segment with a caudal horn. It is 

 ornamented with rows of vascular round spots, and irregularly 

 elliptical subdorsal and lateral spots. The metamorphosis takes 

 place on the surface of the ground in an imperfect cocoon. 



Duponchel describes the larva of this genus, under the name 



Pterogon, as having a lenticular tubercle instead of a caudal horn. 



The outline of the wings, as given in the diagnosis, differs also from 



the European type, in which the fore wings are slightly hooked, 



with two or three distinct dentations. Abbot and Smith represent 



the wings of P. gaurce with these peculiarities, but my specimens 



do not correspond. 



Clemens. 



1. P. gaurae Ahbot Sp Smith. Figured in Sm. Abb. 1 pi. 31. 



Antennce brownish-green and whitish at the tips. Palpi be- 

 neath, white ; the tips of the palpi, head and thorax greenish, with 

 a greenish white line on the sides of the head and thorax. Abdo- 

 men greenish or brownish-green, and the apical tuft the same, with 

 the hind portions of the segments paler. Anterior wings pale 

 yellowish-green, with deep green shades; the basal portion pale 

 yellowish-green, with a broad, median dark green band, the ante- 

 rior edge of which is concave, and its posterior, beginning on the 

 costa at the origin of the post-apical vein, inclines to about the 

 middle of the inner margin. The median band is bordered poste- 

 riorly with pale yellowish-green, and the terminal border is shaded 

 with bright greenish, deepened toward the costa and tip, with a 

 pale streak at the tip and a pale line from the costa to subcosto- 

 inferior vein. The discal spot is dark green on a somewhat lighter 

 ground. Posterior wings orange, with a narrow terminal blackish 



