POLYrTYCHUS. 163 



Larvse. 

 Spiracles with a black slit bordered on each 



side with pinkish-white, the whole with [p. 165. 



a narrow yellow rim P.t. sonanthis Jordan, 



Spiracles pale violet or reddish, the central [p. 170. 



slit white edged with black P. dentatus (Cramer), 



The larvae of the remaining subspecies are unknown or 

 undescribed, and the pupse of P. dentatus and P. t. sonanthis 

 resemble each other so closely that we are unable to give a key. 



37 a. Polyptychic trilineatus luteatus Roths. & Jord. (Fig 33 

 A-C, genitalia). 



Polypiychus trilineatus luteatus, Roths. & Jord., 1903, p. 237, 

 pi. xxv, fig. 4, pi. xxxiv, figs. 8, 10 (genitalia) (Ceylon) ; Seitz, 

 1928, p. 537. 



Imago. — <£$. Body and wings cinnamon-isabella colour, or 

 cinereous-grey. Markings as in P. t. undatus, but the dentate 

 line between the discal and post-discal lines of fore wing 

 nearly as distinct as in dentatus. The distal margin of the 

 fore wing not scalloped, convex in middle. 



$. Tenth abdominal tergite (fig. 33 A) much shorter than 

 in undatus, the sternite higher, more strongly chitinized, the 

 distal edge slightly bisinuate, with a short, narrow, mesial lobe. 

 Clasper divided into a dorsal and ventral lobe (fig. 33 B, C), 

 but the incision not so deep as in undatus, and the lobes 

 differently shaped ; the ventral one especially disagreeing 

 in being rounded and provided before the end with a transverse 

 fold which inclines apicad and gives the lobe the appearance 

 of being transversely cleft ; the ventral unpaired process 

 common to the two harpes apically bent towards the right 

 side. 



P. The eighth tergite has no special armature on the dorsal 

 surface, the pyramidal cone of undatus being represented by 

 a mere swelling. 



Hob. Ceylon. Very rare, and early stages unknown. 



37 b. Polyptychic trilineatus sonanthis Jordan. (PI. II, 

 fig. 17, larva). 



Polypti/chus trilineatus sonanthis, Jordan, 1930, p. 2 (North 

 Kanara : Karwar). 



Imago. — <$Q. The various local forms of P. trilineatus 

 resemble P. dentatus, but are easily distinguished from dentatus 

 by the post-discal line of the fore wing not being straight but 

 curving distad behind R 2 . The following characters are com- 

 mon to ah the subspecies : — 



Fore wing with a straight transverse dark line in basal 



m 2 



