POLYPTYCHIC. 



161 



less open ; tibiae all spinose ; two pairs of spurs to hind tibia : 

 pulvillus, paronychium, frenulum and retinaculum present. 



" Closely allied to Clanis, distinguishable by the open 

 joint of the palpus, or a very weak tongue, or a scalloped 

 distal margin of the wing, or the absence of spinules from 

 the abdominal tergites (excepting edges) ..." (Roths. & 

 Jord., 1903, p. 233). 



In the two species which occur in India " the tongue is 

 very thin and short, not reaching the end of the fore-coxa, 

 yellowish-buff, not visible between the palpi if rolled in. 



Fig. 33. — Polyptychus Hiibn. Genitalia. 



A, P. trilineatus luteatus Roths. & Jord., <$, 10th tergite, dorsal aspect ; 

 B, end of clasper ; C, harpe (pdr and pdl, submesial processes ; 

 pv, ventral process). D, P. trilineatus undatus Roths. & Jord., 

 sexual armature, <£, lateral view, left clasper removed (A, anus; 

 n, process between clasper and 10th sternite; P, penis; pdl, lateral 

 process of right harpe; pdr, process of left clasper; pv, process 

 of harpe ; Vd, dorsal lobe of clasper ; Vv, ventral lobe of clasper ; 

 x. t, 10th tergite; x. v, sternite) ; E, o*, 10th tergite, dorsal aspect ; 

 F, $, vaginal plate {avp, ante-vaginal plate ; pvp, post-vaginal plate ; 

 v, vaginal orifice). G, P. dentatus (Cram.), <$, 10th tergite, dorsal 

 aspect ; H, clasper and harpe {pm, submesial process of harpe; 

 pv, ventral process of harpe ; v, clasper) ; I, $, vaginal plate ; (avp,. 

 ante-vaginal plate; pvp, post-vaginal plate; v, vaginal orifice). 



VOL. V. M 



