f 236 ) 



Siilihasiil s|i(it of I'orcwiim- large; ; postdisc'iil 



(lot M- is larger tliuii the others . . '^'S-i. I'. /HNipfrriilu. 

 c. Snljhasal s[)ot of Ibrewing large ; Liiitlwiiig 



with blackisii hrowii anul doulile sjjot . 202. 1'. carteri. 

 Siibliai^al spot of forewiiig snisill or absent ; 

 hiudwiiig witliout blackish brown anal 

 double sjiot ....... ic. 



ir. Thorax with brown nicsinl line ; hindwiiig 



below with one jmstdiscal line . . 2Ui(. /'. t risvi-la . 



Thorax without brown mesial line : hind- 

 wing below with two postdiscal lines . 2U]. r. oitlioijra/iliHS. 

 X. Forewing with a siibbasal (double) dot or 

 short line : a sharjily define<l black 

 ajjieal area ....... y. 



Forewiug without subbasal dot or siiort 

 line ; no sharply defined black apical 

 area ........ 



If. First and second antemediau lines of fore- 

 wing converging costad . . . 198. l\ (/iijltdfK.s. 

 First and second antemedian lines of fore- 

 wiug not converging costad . . I'JT. 1'. i/rui/i. 

 z. Postdiscal line of forewing straight . . 106. P. (Iiittatini. 

 Postdiscal line of forewing curved between 



11= aud M' ]'J5. r.trilinoif'it^. 



I'J.j. Polyptychus trilineatus. 



Siiteiiiithtis dentalii.i. Walker (ito/i Cramer, 1777), l.i;. viii. p. 252. r. 1 (185li). 



Puiyplijchiis tlmesiiis, Butler (iwii Sfoll, 1790), 'J'ninn.Zinil. Soc. Loud. ix. p. 51^4. n. 2 (1877) (partim). 

 Piili/pli/chun modestiis, Maassen (mm Fabriciu?, 1793), Sldl. Eiil. Zeil. xli. p. SO (1880). 

 *Poli/pt!/chttx trUincatKs Moore, Pmr. Zf,;l.l<w: L'liiil. p. .^90 (1888) (Dharmsala :— Mus. Brit.). 



c?¥. This species is easily distinguished in all its various local forms from 

 dentatus by the postdiscal line of the forewing not being straight, but curving distad 

 behind ]{■'. There can be no question of mistaking it for (kntatus after the 

 differences have once been grasped. Maassen is, to out knowledge, the only author 

 who has described the colour ditl'erences, but he wrongly identified the species 

 as modestus (recte inodcsia). One tinds the insect generally named tiiiu'sius iu 

 collections ; this is a curious misapplication, the figure of t/mes/'fix representing 

 without the slightest doubt the insect previously figured as dentatn/<. The dentate 

 line between the second and third lines of the forewing is mostly not distinct, 

 often barely traceable, sometimes quite absent. 



In both dentiduti and triUneatus the tongue is very thin and s-hort, not reaching 

 the end of the fore-coxa, yellowish buff, not visible between the palja if rolled iu. 

 Joint between jialjjal segments 1 and "J not open ; palpiTS smaller in ? than iu i . 

 Antennae grooved in both sexes. Sjmrs not spiuose. Distal margin of forewing 

 more or less scalloped or uneven, no black dot at base ; cross-veins of hindwing 

 very oblique, lower angle of cell acute. Abdominal tergites with weak spines all 

 over, the s])iues dense and stronger at the apical margins. Penis-sheath without 

 armature, clasper and eighth tergite without friction-scales. 



6. Tenth tergite narrowed to an acute hook (PI. XXV. f 2); sternitc 



