1899.] GROTE — SPECIALIZATIONS OF LEPIDOPTEROUS WING. 25 



time was too short to permit of sending a delegate to attend 

 tbe anniversary. 



The deaths of Prof. Othniel Charles Marsh, of New Haven, 

 on March 18, in his sixty-eighth year ; of Eichard A. Tilgh- 

 man, of Philadelphia, on March 24, in his seventy-fifth year, 

 were announced. 



On motion of Mr. Prime, Gen. I. J. Wistar was appointed 

 to prepare an obituary notice of ^ir. Tilghman. 



A paper was read on ' ' Specializations of the Lepidopter- 

 ous Wing: The Parnassi-Papilionidae, II," by A.^Eadcliffe 

 Grote, A.M. 



The Society was adjourned by the presiding officer. 



SPECIALIZATIONS OF THE LEPIDOPTEROUS WING: 

 THE PARNASSI-PAPILIONID^. 



II. 



(Plates III, IV and V.) 



BY A. RADCLIFFE GROTE, A.M. 



{Read April 7, 1S99.) 



Fam. III. Papilionid^. 

 The cubital cross-vein is always distinct, while in certain forms 

 it does not connect inferiorly with vein vii, but is arrested at the 

 submedian fold (vein vi). This latter is bent downwards to vein 

 vii, beyond the cross-vein, in those types in which the cross-vein 

 attains vein vii (see Comstock's figure in Evolution and Taxonomy, 

 Plate ii, Fig. 2), and appears again within the cross-vein to base of 

 wing. In certain forms the submedian fold is continuous from 

 base to external margin, and the cross-vein then rests on this fold 

 and does not reach vein vii (<?. g., Eurycus cressida, Pathysa anti- 

 phates, Iphiclides podalinus). The following table separates neu- 

 rational groups, and, as far as possible, the genera. The hairy male 

 pockets on the hind whig I have not specially examined. In the 

 nomenclature of the veins I continue to follow Comstock. 



