100 
THE SCOLYTID BEETLES. 
BASIS OF INFORMATION. 
The data on this barkbeetle have been secured through investiga- 
tions by the writer in the Black Hills National Forest, September, 
1901, August, 1902, and June, 1903; at Vermejo, N, Mex., May, 1903; 
at Flagstaff, Ariz., May, 1904; in the Pike National Forest and in 
the vicinity of Colorado Springs, Colo., October, 1905, and June, 
1906, and in the vicinity of Fort Garland, Colo., June, 1906; by Mr. 
J. L. Webb, in the Black Hills National Forest, South Dakota, May 
to October, 1902, and April to September, 1906; in the Chiricahua 
National Forest, Arizona,. June to September, 1907; by Mr. H. E. 
Burke, at Nemo, S. Dak., November, 1904; at Kamas, Panguitch, and 
Panguitch Lake, Utah, June to September, 1907; by Mr. W. D. 
Fig. 59.— The Black Hills beetle: Distribution map. (Author's illustration. 
Edmonston, at Larkspur, Colo., July, 1906; at Brookvale, Sequache, 
Poncha Springs, San Juan National Forest, Wagon Wheel Gap, Coche- 
topa National Forest, Monte Vista, White River National Forest, 
Uncompahgre National Forest, and Colorado Springs, Colo., January 
to December, 1907; in the San Isabel National Forest, at Halms Peak 
and Clarke, in the Gunnison National Forest, the Hayden National 
Forest, the La Salle National Forest, the Ouray National Fort^t. 
the Pike National Forest, the Routt National Forest, the San Juan 
National Forest, the Wet Mountains National Forest, and the White 
River National Forest, Colorado (12 national forests), and at Encamp- 
ment and Downington, Wyo., in 190S. Additional localities through 
correspondence and other collections are Palmer Lake, Cat Mountain, 
Trinchera Estate, Fort Collins, Pine, and the Medicine Bow National 
