THE GENUS DENDROCTONUS. 



i 



157 



D<n<froctonus tcrebrans (not of Oliv.) Zimmerman/, 1868, p. 149 (in part), revision. Le 

 Conte, 1868, p. 173 (in part), synopsis, bibliography. Le Baron, 1871 (in part), 

 economic reference. Le Conte, 1876, p. 385 (in part), revision, synopsis, bibli- 

 ography, locality. Packard, 1887, pp. 175, 243 (in part). Packard, 1890, p. 721, 

 fig. 250 (in part), adult, quotes Harris and Le Conte. Dietz, 1890, p. 29 (in 

 part), Eastern States, California, Washington, fig. 1, antenna and epistoma; var. 

 b, Washington, California, Colorado, Arizona, and Idaho; var. c, New Mexico, 

 Arizona, Nevada, California; var. d, Pennsylvania. Hopkins, 1892a, pp. 64-65 

 (in part), habits, etc. Hopkins, 1893b, p. 143, No. 76 (in part), and index, 

 habits, distribution, host, enemies, etc., in West Virginia, all except part of two 



Preferences from Hampshire and Monongalia counties. Hamilton, 1895, pp. 346, 

 378, list, etc. Wickham, 1896a, p. 169, listed, Lake Superior. Wickham, 1906b, 

 p. 170, list, Coolidge, N.Mex.; Walnut and Williams, Ariz. Hopkins, 1897a, p. 

 41, habits, etc. Blandford, 1897, pp. 146-147, synopsis, redescribed, distribu- 

 tion in Mexico, bibliography. Wickham, 1898, p. 312, list, Arizona. Hopkins, 

 1899a, pp. 392-393,415-421, and index (in greater part), different stages, galleries, 

 etc., described and illustrated (except egg and pupa), with full account of habits, 

 and distribution in West Virginia, etc. Hopkins, 1899b, pp. 14, 15, habits, hosts, 

 etc. Hopkins, 1899c, p. 343 (in part), stridulation, etc. Chittenden, 1899, p. 

 56 (in part). Wickham, 1902, p. 309, list, locality. Felt, 1903, pp. 480-481, 

 figs. 1-3 (in part), adult, larva, pupa, New York State except Long Island (in 

 part?), habits, hosts, enemies, etc. Felt, 1906, pp. 342-345 and index, fig. 64, 

 adult; 65, pupa; 66, larva (in part), habits, host, etc. 



Dendroctonus terebrans (not of Lacordaire) Le Conte, 1868, p. 173. 



Dendroctonus obesus (not of Mann.) Packard, 1877, p. 803, description and probable 

 habits in Colorado, compared with D. terebrans (not of Oliv.). 



?Dendroctonus rufipennis (not of Kirby) Packard, 1887, p. 176, in pitch pine. 



fDcndroctonus similis (not of Lee.) Slosson, 1902, p. 319, list, locality. 



Dendroctonus valens Lee. var. occidentalis Hopkins, 1902b, p. 12, manuscript name for 

 variety. 



Dendroctonus (terebrans) var. valens (Lee.) Wickham, 1902, p. 309, Garland, Colo. 



24. Dendroctonus adjunctus Blandford. 

 ORIGINAL DESCRIPTION. 



"Long. 4.6-5.3 millim. 



11 Oblong, less elongate than D. parallelocollis , slightly depressed, 

 piceous-black, with apex of elytra lighter. Median segment of 

 epistoma shorter than the lateral segments, its sides very oblique and 

 elevated, its apical border concave : front covered with close granules 

 and punctures, with an interrupted median impressed line deepest at 

 its junction with a slight transverse subocular impression; vertex 

 finely punctured; antennae piceous, the scape with rounded club, 

 second joint of funiculus scarcely longer than first, club transverse 

 oval, its sutures curved toward apex. Pro thorax more transverse 

 than in D. parallelocoUis , constricted in front, the apical emargination 

 and basal bisinuation distinct; surface impressed behind apex and 

 somewhat flattened, shining, the punctures sparse and not strong, the 

 median line obsolete. Elytra feebly striato-punctate, shining, except 



