1899.] GROTE — SPECIALIZATIONS OF LEPIDOPTEROUS WING. 33 



Laertias philenor. 



Agrees with Papilio and preceding genera, except that the 

 internal vein of secondaries is straighter and the margin fuller. I 

 think this feature important. The tail is shorter and hardly 

 spatulate. While otherwise resembling fasoniades, the relative 

 position of iv._, is a little more removed from ivj at base. Appears 

 a slightly more generalized type than any of the foregoing, and to 

 represent a stage from which it is probable the preceding (except 

 Iphiclides) have emerged. 



Menalaides polytes. 



Differs from Laertias only in that the tail is shorter and broader, 

 somewhat spatulate. 



Ac hi //ides paris. 



Agrees with Laertias and Mena/aides, except that the humeral 

 cell narrows a little more outwardly. The tail is a little longer 

 than in Meiia/aides, from which I cannot otherwise satisfactorily 

 separate it. These three *^ genera" appear to be related by the 

 straighter vein vii of secondaries. 



Orpheides demo/eus. 



Appears nearest related to Jasoniades. It only differs by the 

 absence of a tail, and in that the praecostal spur is continued, in 

 an even curve, quite to the shoulder of the wing. The internal 

 vein of hind wings is bent as in Jasoniades and allies, with which 

 it should be apparently associated. 



Nestor ides gambrisius. 



Not distinguishable structurally from Orpheides demo/eus. The 

 ffraecostal spur is equally continuous, and, although the proportions 

 of the humeral cell are very slightly different, I am of opinion that 

 no sufficient generic characters can be supplied by the neuration. 



Ca/aides androgens. 



Agrees well with the preceding, but differs by the median and 

 cubital branches of the hind wings forming sharp projections, of 

 which that to ivg is, as usual, the longest. On primaries vein iii, 

 yields very slightly to the tendency to be outwardly removed, and 

 arises beyond the exact point of junction of cross-vein. 



The following three generic types stand rather apart and by 

 themselves. There is, except the straighter anal vein, nothing in 



PROC. AMER. PHILOS. SOC. XXXVIII. 159. C. PRINTED JULY 7, 1899. 



