is the heath hen, T. c. cupido (Linnaeus), that formerly occurred 

 in the northern Atlantic States, but that now is extinct. The last 

 bird of this subspecies died in 1931, and an account of the unsuc- 

 cessful eflForts to save the subspecies is given by Gross (1928). 



110 100 90 80 70 



Fig. 1. Geographic distribution of the genus Tympanuchus Gloger. 

 (1) Range of T. pallidicinctus (Ridgway); (2) original range of 

 T. c. pinnatus (Brewster); (3) range occupied by T. c. pinnatus 

 since cultivated crops were introduced; (4) former range of T. c. 

 cupido (Linnaeus), now extinct; (5) range of T. c. attwateri 

 Bendire. T. c. pinnatus now absent in much of its former range. 



The second subspecies is the Attwater prairie chicken, T. c. attwateri 

 Bendire, which inhabits the prairies of the Gulf Coast of Texas. It 

 still persists in a few places, and an account of its natural history 

 is given by Lehmann (1941). The third subspecies is commonly 

 known as the greater prairie chicken, T. c. pinnatus (Brewster); 

 it occurs in the grasslands of the Midwest. 



Before the Midwest was settled the greater prairie chicken lived 

 in the Tall-grass Prairies of the eastern and southern parts of what 



[5] 



