1916.] NATURAL SCIENCES OF PHILADELPHIA. 249 



Homerville, VIII, 27, 1911, (R. & H.) f Atlantic Beach, VIII, 24, L911, (II. & 



4d\39. H.), 9cf, 29. 



Albany, VIII, 1. L913, (R. & II.), 1 d\ Pablo Beach, IX, 5, 27, L913, (W. T. 



1 9," 1 juv. d". Davis), 3 d\ 3 9. 



In. linn River, (T. J. Priddey), 1 9, 



Florida. [Hebard Cln.]. 

 Jacksonville, VIII. 25, 1911, (R. & H.), 

 I ';1X,7, 1913, XI, 5, 1911, (W. T. 

 Davis), 1 cf, 2 9. 



In conjunction with the above material, we have carefully studied 

 the very large series of the species already recorded and in our col- 

 lections, representing localities from Indiana and New Jersey to 

 extreme southern Florida. 



Examination of paratypes of P. scudderi and study of Blatchley's 

 original description of that insect show that the most important 

 characters given by Blatchley to separate scudderi from atlantica 

 are size, antenna! and cereal length and shape of the furcula. The 

 first three of these characters are shown by the appended table of 

 measurements to be decidedly variable in the species, and too unstable 

 to be considered of even racial significance, while the shape of the 

 furcula is shown by the material before us to afford no recognizable 

 differences. 



Blatchley's species consequently falls, for although the present 

 insect shows that other geographic races are probably in the process 

 of formation, none of these, excepting P. a. paroxyoides, has as j r et 

 reached a sufficient differential development to be conscientiously 

 recognized. An effort to describe the more pronounced of these 

 formative races would only create unnecessary confusion. Many 

 other species, among which are Clinocephalus elegans, Chortophaga 

 viridifasciata and PardalopJiora phmnicoptera, demonstrate incipient 

 racial development which has not as yet reached a stage where such 

 can be properly recognized and geographic races described. 



Measurements {in mi Hi meters) of extremes. 



Length Length of Length of Length of 



c? of body. antenna. pronotum. tegmen. 



Lake County, Indiana 17-17.4 8.5-8.8 4.2-4.6 11-12.2 



Stafford's Forge, New Jersey. 18. 8-19. 6 9.5-10 4.5-4.6 11-11.2 



Winter Park, N. C .... 20. 4-21. 7 10-13.2 4.7-5.1 13.2-14.7 



Jesup,Ga 21.8-24 10.7-11.5 4.9-5.6 14.5-17 1 



Atlantic Beach, Fla 21.2-25 11-12.8 5-5.8 15.3-18.3 



Miami, Fla 15.7-19 S.4-10 3.6-4.4 13-15.9 



