REHN AND HEBARD 35 



case, however, is a New Jersey specimen as large as the average 

 North Carohna individual. 



As an index to the average amount of this geographic size 

 variation we here present the proportions (in millimeters) of 

 representative pairs of average dimensions for the series from 

 that locality. 



Lakehurst, Fayetteville, Florence, 



New Jersey North Carolina South Carolina 



d' 9 d' 9 d" 9 



Length of body 20.2 22. Tj 25 2.3.2 25. .5 24.7 



Length of pronotum 5.9 5.9 6.5 6.5 6.8 7 



Length of caudal femur 17.3 18 19.8 20.5 20 21 



Length of o\ipositor 9.2 .... 10.2 .... 10 



Billy's Island, South Jackson- 

 Georgia ville, Florida 



d' ? cf 9 



Length of body 22.5 27 24 23.2 



Length of pronotum 7 7.3 8 7.5 



Length of caudal femiu- 21 21.8 23 . 3 22 



Length of ovipositor 10 .... 10 



The body length is, as usual, unreliable on account of the 

 frequent unnatural compression or extension. 



The length of the tegmina and wings is as variable in this 

 species as in vulgare, the caudate type of tegmen and wing appear- 

 ing in any extensive series. We have before us specimens with 

 the tegmina and wings considerably surpassing the apices of the 

 caudal femora from Lakehurst, Chatsworth, Jamesburg, Park- 

 dale and Atsion, New Jersey; Bayville, Virginia; Fayetteville 

 and Lake Waccamaw, North Carolina; Florence and Yemassee, 

 South Carolina; Albany, Groveland, Thomasville, Billy's Island, 

 Tybee Island and Jesup, Georgia, and Jacksonville, South Jack- 

 sonville, Pablo Beach, La Grange and Cedar Keys, Florida. 



An examination of one hundred and eleven specimens for the 

 presence or absence of spines on the ventro-external margin of 

 the caudal femora gives figures which support our former con- 

 tention ^'^ regarding the variability of this feature. We are able 

 here to go more fully into this matter and present details of the 

 spine count. Twenty-one New Jersey specimens bear no spines 

 on this margin, while fifty-three have one or more spines. Of this 

 fiftj'-thrce, the combinations of spines and number for each are 

 given below with the figures for series from four other localities. 



isproc. Acad. Nat. Sci. Phila., 1910, p. 639, (1911). 



TRANS. AM. ENT. SOC, XLI. 



