PTEROGONIA. By M Gaede. 
451 
A. bothrophora Hmps. (43 f). On the underside of forewings this species has a tuft of scales at the end bothrophora. 
of cell. Forewings olive-brown, suffused with lilac. Antemedian and postmedian lines dark, with pale edges, 
faintly excurved anteriorly, then almost parallel obliquely inwards. A delicate black dot on disco-cellular. 
Submarginal line consists of black dots, about parallel to outer line. Hindwings whitish, ochreous brown at 
margin. 18 mm. India, Ceylon. 
A. icterica Swinh. (= bifasciata Hmps.) (43 b). Forewings ochre-brown suffused with lilac. Both iclerica. 
lines yellow, very obliquely inwards, the outer line angulated on vein 7. At disco-cellular 2 black dots. In¬ 
distinct black dots before the margin. Hindwings white and transparent, narrowly brownish at margin. 
30—34 mm. India. 
A. dentula Led. (innubila Swh.). This species was already discussed in Vol. Ill, p. 300 and illustrated dentula. 
in Suppl. Vol. Ill, pi. 26 g. Smaller than the previous species, typical of Syria and Persia. - angulifera Mr. ungulifera. 
the indian form is greyer, the pale lines similarly marked as in icterica. Hindwings impure white, grey at 
margin. 22—24 mm. North India. 
55. Genus: (Pterogonia Swh. 
Frons with long pointed tuft of hairs through which the long palpi extend. Forewings wide, neuration 
normal, apex pointed, outer margin typical to vein 3, somewhat undulate, boldly arched at inner margin. 
On hindwings vein 5 arises somewhat separate from 7, vein 8 anastomoses widely with the cell. Type: epi¬ 
scopalis Swinh. All species belonging to the indo-australian fauna. 
1. Forewings angulated at vein 3, undulate below. 
Pt. nubes Hmps. (43 b). Forewings dark reddish-brown, inclined to grey in marginal area. Antemedian nubcs. 
line uniformly curved, dentate and dark. In centre an irregular row of white dots and a few more from apex 
to vein 6. Hindwings lighter brown, paler at base. 38 mm. Only 1 $ known from Ceylon, captured in 1893. 
2. Forewings boldly excised below apex, the angle at vein 3 more acute. 
Pt. aurigutta Whr. (= irrorata Dudg.) (43 g). Forewings pale red-brown with delicate dark striations. aurigutta. 
Antemedian line delicately brown, very oblique to behind centre of inner margin. Reniform stigma shaped 
like a golden yellow lunule and with a black dot above and below. Postmedian line curved approximately 
parallel to the margin. Submarginal line indicated by a few black dots. Hindwings brownish white, widely 
darker at margin. In S ground colour is rusty red, antemedian line undulate below vein 2. The golden lunular 
mark is absent, the black dots are present. 40 mm. India, Siam, Malacca. 
3. Forewings with acute apex, margin scarcely excised. 1 n J of the 
first species the neuration of forewings is very distorted. 
Pt. episcopalis *$Wi. (43 g). Forewings lilac-white with a few dark brown scales, inner area of costa brown, episcopalis. 
From base to behind the cell numerous brown striations, blackish streaks on median nervure, no streaks below 
vein 1. Antemedian line delicate, dark, somewhat excurved, then vertically to inner margin. At disco-cellular 
a triangular silvery spot with a few silvery dots. Postmedian line indistinct, dark, slightly curved. Sub¬ 
marginal line consists of black dots with silvery scales. Hindwings pale brown. In $ forewings are more 
regularly reddish brown, the silvery spots united to a large spot. — episcopana Strd. has the silvery spot rounded, episcopana. 
42—50 mm. India, Malacca, Borneo, New Guinea. 
Pt. cassidata Warr. In this species the veins of the forewings are only slightly distorted. Forewings cassidata. 
lilac-grey at inner margin and above vein 2 to the apex. The remainder brown with pale and dark striations. 
The pale lines have reddish edges distally. Antemedian line obliquely to centre, vertically to vein 1, then 
again obliquely; postmedian line somewhat angulated outwards at vein 8 and 4, inwards behind the cell and 
on the submedian fold. The silvery spot similar to that of episcopalis, but more rounded on inner edge and 
outlined by dark brown. 1 $ from Coorg in S. India. 
Pt. striatura Mr. (43 b). Forewings short and wide, flesh coloured, darker at costa, with numerous striatura. 
pale brown striations. Inner line delicate, dark brown, curved outwards to centre, then vertically, slightly 
incurved on submedian fold. At disco-cellular 2 dark dots. Outer line approximately parallel to margin, ob¬ 
tusely angulated outwards at vein 4 and incurved above and below. A few dark submarginal dots. Hindwings 
grey-brown, darker at margin. $ 34 mm. Ceylon. 
Pt. nerissa Swh. (43 c). Forewings brown with lilac sheen and silvery grey scales. A curved dark ante- nerissa. 
median line indicated. At disco-cellular 2 dark spots. Postmedian line from near apex to behind the centre 
of inner margin indicated by the paler olive-brown colouration of the marginal area. An oblique silvery streak 
from apex to vein 5. A few black submarginal spots. Hindwings reddish brown, darker at margin. <$ 40 mm. 
Malacca, Borneo. 
