164 NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



no more than incipient racial differentiation in the southeastern 

 portion of the distribution of islandicus, for in all series appre- 

 ciable individual variation is shown and the broadest cereal 

 apices in the series from Pequaming, Michigan, are as wide as 

 the narrowest cereal apices in the series from Monterey, Vir- 

 ginia. Moreover, in the related celatus, even greater cereal 

 variation, with no indication whatever of convergence between 

 these species, is found. 



The following material is before me: 



Pennsylvania: Mechanicsville in Clarion County, VIII, 29, 1935, (Rehn 

 and Rehn; in openings of mixed forest), 53, 3$, [A.NJ3.P.]. Chestnut 

 Ridge in Westmoreland County, (0. Brugger), 13, 19, [A.N.S.PJ. 



Maryland: Jennings in Garrett County, VIII, 1911, (W. Stone), 29, 

 [A.N.S.P.L 



Virginia: Sounding Knob, 4200 to 4300 feet, VIII, 21, 1916, (M. Hebard; 

 scarce in undergrowth at edge of forest), 13 (cerci very short and very 

 broad at apices), 29. Monterey, VIII to IX, 1914, (H. Fox), 93 (cerci 

 moderately broad to broad at apices), 11 9, 12 [Hebard Cln. and U.S.N .M.]. 



Ontario: DeGrassi Point, 23, 29, paratypes of abortivus, [A.N.S.P. 

 and Hebard Cms.]. Gilford, 1 3 , 1 9 . 



Ohio: 13 Perry, VIII, 12, 1931, 113,59. Thompson, 13, 19. Stebbins 

 Gulch, VIII, 14, 1931, 3 3,19. Black Hand, VIII, 21, 1931, 4 3 (2 normal, 

 2 with cerci broader than usual at apices), 29. Licking Township, VIII, 

 19, 1931, 5 3 (cerci slightly to markedly broader than usual at apices), 29. 

 Philo, VIII, 27, 1933, 19. Deerfield Township in Morgan County, 19. 

 Berne Township in Fairfield County, X, 29, 1933, 23 (1 almost normal, 

 1 with cerci broader than usual at apices). Clear Creek in Good Hope 

 Township in Hocking County, VII, 24 to VIII, 4, 1932 and 1933, 9 3 

 (cerci individually varying from normal to markedly broader than usual 

 at apices), 79. 



Indiana: Clear Lake in Steuben County, 13, 19. 



Michigan: La Salle Island, 33, 39, paratypes, [Hebard Cln. and A.N. 

 S.P.]. Falls of the Slate River in Baraga County, VII, 23, 1921, (M. 

 Hebard), 23. Pequaming, 43 3, 459, 2 juv. 3, 2 juv. 9. Hughitt- 

 Rawson Reserve in Gogebic County, 13, [A.N.S.P.L 



Wisconsin: Upper Brule River in Douglas County, 19, [A.N.SJP.L 

 Pembina, VIII, 1, 1910, (J. G. Sanders), 13. 



Manitoba: Whitemouth River on Dawson Road, VII, 13, 1925, (N. 

 Criddle), 13. 



12 This series was recorded as Melanoplus celatus by Hebard in Fox in 

 1917. 



13 All of this material was secured by E. S. Thomas and C. F. Walker for 

 the Ohio State Museum. A series of the duplicates is now in the author's 

 collection. 



