1899.] GROTE — SPECIALIZATIONS OF LEPIDOPTEROUS WING. 19 



Artnandia thaiiina. 



Vein ivi leaves the radius at the junction of the cross-vein. 

 Vein iiig is well removed beyond the cell. In these charac- 

 ters Annandia attains the specialization of Zery?ithia, but on 

 secondaries the humeral cell is much extended. Vein ivg of sec- 

 ondaries is extended, forming along and slightly spatulated " tail." 

 The extension to vein Vi is shorter, and that to Vo is still more ab- 

 breviated. The internal vein reaches the anal angle, but it is 

 curved as in the preceding genera, thus more specialized than 

 Sericinus, in which it is straight. The long primaries and the tailed 

 secondaries strongly remind one of the Papilionidae. The pattern 

 of ornamentation and the neuration are those of its group. 



Mr. Scudder (/. ^., 121) spells the name of this butterfly 

 ^^ thatdina,^^ but Staudinger (in litt.) gives the spelling which I 

 have above adopted. 



Sericinus telamon. 



In this type the sexes differ greatly in color and markings. 

 In the two specimens examined (det. Staudinger) it is, strange 

 to say, the female which shows the more advanced type. But 

 I infer that the differences noted are individual. In both, vein 

 ivi leaves the cross-vein, a generalization as compared with 

 Armandia, as is also the still larger humeral cell of the secondaries. 

 But in the white male, vein iii, leaves the radius before, in the 

 yellow, black-striped female just after, the point of jointure of the 

 cross-vein. The internal vein on hind wings is straight, and this is 

 a generalization as compared with all preceding generic types. The 

 prolongation to vein ivg is very long and quite even in width, not 

 spatulate. In this genus and Armandia the cubitus shows a slight 

 scar, the relic of the vanished cross- vein. 



So far as I am able to ascertain from accessible literature, I have 

 here discussed the neuration of all the generic types yet proposed 

 in the Parnassiidae. It becomes quite clear, I hope, that the 

 neuration assumes a more specialized type in the Parnassiidae, as 

 compared with the Papilionidae, while retaining the essential fea- 

 ture characterizing the entire group. So far as I am aware, no con- 

 tradiction exists to the view that, commencing our lists with the 

 more specialized members of any group, we should in this case 

 allow the Parnassiidae to take precedence. 



