114 



THE SCOLYTID BEETLES. 



D. A., 14 specimens; Gillette, 2 specimens ; Hopk. U. S., more 

 than 10,000 specimens, including all stages and work. 



BIBLIOGRAPHY AND SYNONYMY. 



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

 lection 1890). 



Dendroctonus approximates Dietz, 1890, p. 31 (in part?) (specimen with type 

 series). 



Dendroctonus ponderosse Hopkins, 1902a, p. 3, manuscript name only. Hopkins 

 1903b, pp. 275, 282, p. xxix, figs. 28, 32, stages and work figured, and full accoun 

 of habits, life history, methods of control, etc. Hopkins, 1904, pp. 41, 43, 44 

 PL I, fig. 1, Pis. Ill, VIII, IX, XII, fig. 2, stages and work illustrated, habits 

 host, distribution, etc. Hopkins, 1905, pp. 1-24, full account of history, hab 

 its, life history, work, methods of control, etc., Pis. I, II, figs. 1-6, stages am 

 work. Hopkins, 1906a, p. 4, old work. Hopkins, 1906b, p. 147, Pis. IV, V 

 figs. 1-5, anatomy of larval head. Fall, 1907, p. 218, list, locality. Hopkins 

 1908, p. 162, depredations. 



Dendroctonus ponderosa Hopkins, 1902b, p. 10, brief original description, adult, etc. 

 galleries and work illustrated, fig. 1, Pis. I, III, IV, VII, full account of habits 

 methods of control, etc. Hopkins, 1902c, p. 21, habits. Hopkins, 1903a, p. 59 

 habits, etc. 



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FIG. 71. Dendroctonus ponderosx: Distribution map. (Original.) 



11. Dendroctonus Jeffrey! n. sp. 



(PI. IV, fig. 11.) 



Adult. Type of species, female: Length 7.5 mm., black; elytra 

 declivity with a few long hairs. Head with front convex, with slight 

 anterior and posterior impressions, without frontal elevations; elytra 

 rugosities moderately coarse and dense, becoming much finer on lat- 

 eral area and coarser toward the vertex. Pronotum shining, sides 



