( 236 ) 



Snbbasiil sjiot of forewing large ; postdiscal 



(lot M- is larger tliau the others . . 2'Si. P. paiipcn-ula. 

 f. Subbasal spot of Ibrewiiig large ; hiiidwing 



with blackish brown aual double spot . 2U2. P. carter!. 

 Subbasal spot of forewing small or absent ; 

 hiudwing without blackish lirown anal 

 double sjwt ....... w. 



tr. Thorax with brown mesial line ; hiudwing 



below with one postdiscal line . . 200. F. tr/'ifcc/d. 

 Thorax without brown mesial line ; hind- 

 wing below with two postdiscal lines . 201. F. orf//oi/rtij//i'ts. 

 .c. Forewing with a subbasal (double) dot or 

 short line : a sharjjlj- defined black 

 apical area ....... y. 



Forewing without subbasal dot or short 

 line : no sharply defined black ajiical 

 area ........ ^. 



</. First and second autemedian lines of fore- 

 wing converging costad . . . 108. 7'. i//<//f(ifi/g. 

 First and second anteruedian lines of iorc- 



wing not converging costad . . I',)'. J', i/rai/i. 



~. Postdiscal line of forewing straight . . 106. P. (Icntatuts. 

 Postdiscal line of forewing curved between 



K'- and M' 105. P. triUi>riiliix. 



10.5. Polyptychus trilineatus. 



HiMiiiiithiix ilciilulii'i. Walker («.i« Cnimer, 1777), !.i: viii. \>. -Ib'l. ii. 1 (18.3i;). 



/'.ilii/iiiicliiis limct^iii-i. Biitlei- (/».» Stoll, 17:10). Ttnii-<. Zmil. Sor. L'lml. ix. p. .084. n, 2 (1877) (partim). 

 l'„liipliii:lwH iiiodecfiis. Maassen {iiuii Fabriciu?, 171)3), Stclt. Ent. Zcit. .xli. p. GO (1880). 

 *ruli/ijfi/chu.-: liiUiifatiiH Moore, Pivr. Zwil. Snr. Lmii/. p. IS'.liI (1888) (Dharmsala ;— Mus. Brit.). 



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

 dentatxs by the postdiscal li)ie of tlie forewing not being straight, but curving distad 

 behind 1{-. There can be no question of mistaking it for dentatias after the 

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

 who has described the colour diBerences, but he wrongly identified the species 

 as moth'stii.'i (recte modi'sta). One finds the insect generally named tiim'sius in 

 collections ; this is a curious misapplication, the figure of t/inesias representing 

 without the slightest doubt the insect previously figured as dentatus. The dentate 

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

 often barely traceable, sometimes quite absent. 



In both dcntatiiK and trUineatus the tongue is very thin and short, not reaching 

 the end of the fore-coxa, yellowish bufl', not visible between the palpi if rolled iu. 

 Joint between jialpal segments 1 and 2 not open ; paljius smaller in ? than in 6. 

 Antennae grooved iu both sexes. Spurs tiot spinose. Distal margin of forewing 

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

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

 over, the sjiines dense and stronger at the apical margins. Penis-shcath without 

 armature, clasper and eighth tergite without friction-scales. 



6. Tenth tergite narrowed to an acute hook (Pi. XXV. f. 2); steruite 



