THE GENUS DENDKOCTONUS. 



109 



Washington National Forest. Wyoming: North Fork Shoshone 

 River, Wapiti. Additional localities from other collections: (A. M. 

 N. H.) Millwood, Cal.; (U.S.N.M.) Columbia FaUs, Mont. 

 . Host trees. — Pinus lamhertiana, P. monticola, P. murrayana and P. 

 fonderosa (common); Picea engelmanni (rare). 



Identified specimens. — ^Le Conte, M. C. Z., 3; Horn, A. E. S., 1; 

 A. M. N. H., Webb collection, 1; Henry Edwards collection, 1; 

 U.S.N.M., 2; D. A., 11; Webb collection, 14; Hopk. U. S., over 500, 

 including different stages and work. 



Fig. dS.—Dendroctonus monticolx: Distribution map. (Original.) 



Bibliography and Synonymy. 



Dendroctonus similis (not of Le Conte, 1860) Le Conte, 1876, p. 385 (in part), locality. 

 Dendroctonus n. sp. Hopkins, 1899b, pp. 14, 26, first record of habits and hosts. 

 Dendroctonus monticola Hopkins, 1901b, p. 67, referred to as new species but not 



described, habits, galleries. Hopkins, 1902c, p. 21, notes. Hopkins, 1905, 



p. 11, first description, distribution, characters, very brief. Webb, 1906, p. 22, 



mentioned. 

 Dendroctonus monticolse Hopkins, 1902a, p. 3, manuscript name. 

 Dendroctonus n. sp. (mountain pine Dendroctonus). Hopkins, 1904, pp. 19, 42, 45, 



habits, hosts, distribution, etc. 

 Mountain pine beetle. Hopkins, 1908, p. 162. 



10. Dendroctonus ponderosse Hopkins. 



(PI. IV, fig. 10.) 



Adult. — Type of species, female: Length, 6 mm., black; eiytral 

 declivity with a few long hairs. Head with front convex, without 

 median elevation or groove, but with faint posterior impression; 

 eiytral rugosities moderately coarse and moderately dense, becoming 



