THE GENUS DENDROCTONUS. 



79 



breed in injured, dying, and felled trees, in company with one or 

 more of the other species. (See also general discussion under 'Char- 

 acter and Extent of Depredations" and "General Methods of Con- 

 trol" (pp. 4 and 29-35), and "Economic Features," etc., for Xos. 1, 

 2, and 4. 



BASIS OF INFORMA- 

 TION. 



Information re- 

 garding this bark- 

 beetle is based on 

 investigations by the 

 writer at Wilhams, 

 Ariz., September, 

 1902, at Flagstaff, 

 Ariz., in 1904, and at 

 Palmer Lake, Colo., 

 October, 1905; by 

 Mr. J. L. Webb at 

 Flagstaff, Ariz., May 

 to September, 1904, 

 intheCapitanMoun- 

 tains, and White 

 Mountains, and at 

 Cloudcroft, X. Mex., 

 and in the Santa 

 CataUna National 

 Forest, Rincon 

 Moimtains, and Chir- 

 icahua National For- 

 est, Arizona, May to 

 September, 1907 ; bv 

 Mr. W. F. Fiske at 

 Capitan, Cloudcroft, 

 and Meeks, X. Mex., 

 March to May, 1 907 ; 

 by Mr. H. E. Burke J K 

 at Kamas, Pan- Or^^V 

 guitch, and Pan- 

 guitch Lake, Utah, 

 July, 1907; by Mr. W. D. Edmonston at Brookvale, Monte Msta, and 

 Laveta, Colo., in 1907. Additional locahties through correspondence 

 and from other collections are the Chiricahua Mountains, Xew Mexico ; 

 Paradise and Show Low, Ariz., and Glenhaven, Colo. It is repre- 



FlG. 42. — ^The Colorado pine beetle: Egg galleries. Reduced. 

 (Author's illustration.) 



