18 GKOTE — SPECIALIZATIONS OF LEPIDOPTEROUS WING. [Jan. 20, 



curve of the margin, as in Paniassius and the Saturniades. 

 This character is probably more recently acquired. The neuration 

 else shares the main features of that of its group. The humeral cell 

 is narrow and reduced, the lower vein (base of ii) being weaker. 

 On primaries vein ivi springs from the cross-vein. Although the 

 pallor of the ground color of the wings suggests the preceding 

 subfamily, the pattern of ornamentation (on the value of which for 

 taxonomical purposes I have been insisting upon for more than 

 thirty years past) is distinctly Zerynthian. The discal blotches 

 are intermediate between the bands of Zerynthia and the spots of 

 the Parnassians and show the origin of the latter. The subter- 

 minal red-marked fasciae are like Zerynthia. Archon may be re- 

 garded as a generalized form of Farnassius, showing the origin of 

 the latter from Zerynthia-W^t ancestry. 



Zerynthia polyxena. 



The material examined shows that vein ivi is in a fluid 

 state. In a female this vein leaves the extreme upper corner 

 of the cell. In the male it has passed beyond the cell and issues 

 from the radius. In a female of rumina, figured by me (^Mitthei- 

 lung a. d. Roemer-Afuseum, No. 8, Taf. i, Fig. 2), it leaves the 

 cross-vein. Not only this vein varies in position, but also vein iii,, 

 which is further removed outwardly in the specimen in which vein 

 ivj leaves the radius. Sufficient material has not been examined to 

 gauge the extent of these variations, but it seems unlikely that 

 they are sexual. As compared with Archon, the internal vein of hind 

 wings is less bent and reaches the anal angle, the humeral cell is 

 a little wider, else the neuration generally agrees. Traces of a 

 splitting of vein ii at base appear on fore wings. 



Luehdorfia piiziloi. 



The neuration of the female examined agrees exactly with 

 that of Zerynthia rumina. Except that the margin of sec- 

 ondaries is more uneven, and that vein ivg is produced- into a 

 short " tail," no differences whatever have been noted. Vein ivj 

 leaves the cross-vein. The forms in which vein ivi is still attached 

 to the cross-vein must be regarded as more generalized than those 

 in which it has ascended the radius and is thrown off beyond the 

 cell. 



