-61- 
Srood XXI of the tredecim race is very problematical . Three suc- 
cessive appearances were recorded in the extreme northwestern part of 
Florida, lSF*- 1 -, 1857, and 1870. There was a single record of the abearance 
of this "brood in I883 and 1S°G in South Carolina and Louisiana, respectively. 
The "brood was not recorded in 190$ an d in 1Q22 only two specimens were seen, 
"both at Pelahatchie, Miss. Following is a list of all the records available 
to the Insect Pest Survey on the occurrence of this brood: 
Brood XXI. lgUU, 1S57, IS70, I883 (1896) , ( 1909 ) > 1922. 
ALABAMA. 
Lauderdale *; Mobile , Mobile 1870. 
FLORIDA. 
Northwestern Part 1S70-, Gadsden lSkk , 1857; Jackson lgU* , 1857; 
Washington 18^'-, 1857 . 
LOUISIANA. 
Livingston , Whitehall I896. 
MISSISSIPPI. 
Eastern part 1870; Jackson*; Tishomingo *; Rankin , Pelahatchie 1922. 
NORTH CAROLINA. 
Davie 1870; Iredell 1870. 
SOUTH CAROLINA. 
Barnwell . Martin IS83. 
TENNESSEE. 
Hardin 1922, Savannah 1870. 
* Recorded in U. S. D. A. Bur. Ent. B. 71, 1923. 
