1916. 



NATURAL SCIENCES OF PHILADELPHIA. 



243 



Charlotte, VII, 27, 1913, (R. & H.), 



1 juv. '. 1 juv. 9. 

 FayettevUle, IX, 9, 1911, (R. & H.), 



19. 

 Wilmington, IX, 8, 1911, (R. & H.), 



19. 

 Winter Park, IX, 7, 1911, (R. & H.), 



7 cf, 10 9, 1 juv. cf. 

 Wrightsville, IX, 7, 1911, (R. & H.), 



3 d\ 



Smith ( 'a nil i no. 



Florence, IX, ti, 1911, (R. & H.), 3 cf. 

 Columbia, VII, 28, 1913, (R. & H.), 



1 juv. cf , 3 juv. 9 . 

 Ashley Junction, VIII, 15, 1913, (R.), 



2 cf, 1 9, 1 juv. cf, 1 juv. 9. 

 Yrmassee, IX, 4. 1911, (R. & H.), 



12 d\ 9 9. 



Georgia. 



Toccoa, VIII, 4, 1913, (H.), 3 juv. d\ 



2 juv. 9. 

 Currahee .Mountain, VIII, 5, 1913, 



(H.), 8 cf , 3 9 , 2 juv. cf , 1 juv. 9 . 

 Sharp Mountain, VIII, 6, 1913, (R.), 



1 juv. cf , 1 juv. 9 . 

 Buckhead, VIII, 2, 1913, (R. & H.), 



2 juv. cf. 

 Augusta, VII, 29, 1913, (R. & H.), 



2 juv. o\ 5 juv. 9 . 

 Macon, VII, 30-31. 1913, (R. & H.), 



3 cf , 4 juv. o"\ 4 juv. 9 . 

 Warm Springs, VIII, 9-10, 1913, (R ), 



3 cf , 3 juv. cf, 1 juv. 9. 



The present geographic race is the southern development of 

 M. luridus, and is found along the Atlantic coast as far north as 

 Petersburg, Virginia. In the extreme southern Appalachians it is met 

 with up to an elevation of about 2,000 feet, above which typical 

 luridus is found. 



This southern race is distinguished from luridus s.s. by its greater 

 size, more attenuate form and smoother structure, by the subgenital 

 plate of the male being longer in proportion to its width and by the 

 ventral valves of the ovipositor of the female having the distal 

 portions much longer and less curved, in fact nearly straight. 

 Scudder gave the character of the subgenital plate in his description 

 of keeleri, but wrongly contradicted himself in his key. 



A much greater amount of genital variation, particularly in the 

 shape of the cerci, is found in the present species than is usual in the 

 genus Melanoplus. There is also much variation in size and colora- 

 tion. The conclusion that the species increased regularly in size in 

 southward distribution 101 must be somewhat modified, for although 



Tybee Island, IX, 2, 1911, (H.), 3 cf , 



29. 

 Isle of Hope, IX, 3, 1911, (R. & H.), 



14 cf, 3 9, 1 juv. cf, 1 juv. 9- 

 Sandfly, IX, 3, 1911, (R. & H.), 1 cf , 



39. 

 Jesup, IX, 1, 1911, (R. & H.), 4 cf , 



49. 

 Waynesville, (J. C. Bradley), 1 9. 

 Brunswick, VIII, 30, 1911, (H.), 6 cf . 



29. 

 St. Simon's Island, VIII, 30, 1911. 



(R. & H.), 5 cf, 3 9, 1 juv. 9. 

 Cumberland Island, VIII, 31, 1911, 



(R. & H.), 4 cf, 19. 

 Billy's Island, IX, XII, 23, 1911, 



(J. C. Bradley), 2 cf . 

 Albany, VIII, 1, 1913, (R. & H.), 



1 juv. cf. 

 Spring Creek, VII, VIII, 1912-13, 



(J. C. Bradley), 1 juv. cf, 1 juv. 9. 



Florida. 



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



H.), 5 cf, 49; XI, 5, 1911, (W. T. 



Davis), 2 cf, 1 9. 

 Atlantic Beach, VIII, 24, 1911, (R. & 



H.), 10 cf, 8 9. 

 Daytona, XI, 11, 1911, (G. P. Engle- 



hardt), 2 9, [B. I.]. 

 Live Oak, VIII, 26, 1911, (R. & H), 



2 cf, 19. 



101 Proc. Acad. Nat. Sci. Phila., 1907, p. 297, (1907). 



