GYNANDROMORPHISM IN LEPIDOPTERA. 253 



Thus, in this case almost all male and female genital structures, 

 except the male uncus, coexist, though the male ones are deformed ; 

 they are disposed, with the exception of the rudimentary sub- 

 scaphium, on both sides of the plane of bilateral symmetry. 

 This case is similar to that of the G. rhamni L. in the respect that 

 here also the paired female papillae and the paired male valvae are 

 divided from one another by the frontal plane. 



Lycxna argus L. (xgon Schiff.). 1 Wings: male on the left and 

 female on the right. Antennae uniform. Both fore legs with 

 female tarsus. 



Copulatory apparatus (Fig. 10) predominantly female. Tergite 

 and sternite of the 8th segment nearly normal except for the 

 distal angles of the tergite being obtusely shortened. loth tergite 



FIG. 10. Copulatory apparatus of the gynandrous Lyccena argus L. : v., valvoid ' 

 pr. v., processus valvae of the normal male; other abbreviations as in Fig. 9. Zeiss, 

 obj. AA, oc. I. 



split on its dorsal surface. Apophyses anteriores and posteriores, 

 as well as papillae anales, normal. Membranous tube (Fig. 10, 

 pr. d. b.) bearing on its tip the ostium bursae, developed, but about 

 three times stouter than normal. A pair of lamellae antevaginales 

 a little wider and shorter than normal ones. Ostium bursae 

 present, its ductus indistinct. Bursa copulatrix bag-like, long, 

 plicated, nearly normal. A deformed, strongly chitinized, plate 

 lying in the body cavity between the 8th and Qth tergites may be 

 considered as male valvoid, because on its distal extremity it 



1 Species with claws on the fore tibiae. 



