THE GENUS DENDROCTONUS. 167 
1879. Peck, C. H.— Report of the Botanist. 28th Ann. Rep. N. Y. State Mus. Nat, 
Hist., pp. 32-38. 
1881. Eichhopf, W. — Die europaischen borkenkafer, pp. 37, 125-128, Berlin. 
1882. Hough, F. B. — Report on Forestry, submitted to Congress by the Com- 
missioner of Agriculture, Part VIII, Insect ravages, pp. 259-274. 1. The 
injuries done to spruce and other coniferous timber by insects. 
1885. Lintner, J. A. — Second report on the injurious and other insects of the 
State of New York, p. 54, Albany. 
1887. Fletcher, J. — The spruce barkbeetle (D. rufipennis).<^ Appendix to the 
Report of the Minister of Agriculture. Report of the Entomologist and 
Botanist, pp. 39, 40. 
1887. Packard, A. S. — Insects injurious to forest and shade trees. <Bul. 7, U. S. 
Ent. Comm., pp. 175-177, 243. 
1888. Schwarz, E. A.— Proc. Ent. Soc. Wash., I, No. 1, p. 175. 
1889. Judeich, J. T., und Nitsche, H. — Lehrbuch der mitteleuropaischen forst- 
insektenkunde, pp. 458-462, Wien. 
1890. Dietz, W,. G. — Notes on the species of Dendroctonus of boreal America. < 
Trans. Amer. Ent. Soc, XVII, pp. 27-32. 
1890. Packard, Alpheus S. — Insects injurious to forest and shade trees. Revision 
and enlarged edition of Bui. 7.<5th Rep. U. S. Ent. Comm., U. S. Dept. 
Agr., pp. 721-722, 814-822, 903. 
1891. Harrington, W. Hague.— General notes.<Can. Ent., XXIII, No. 2, p. 27. 
Ibid, Science, XX, pp. 256, 257, November 4, 1892. 
1892. Pauly, A. — IJber die brutpflege und jahrliche geschlechterzahl des riesen- 
bastkafers, Hylesinus micans Ratz.<Forstlich-naturwissenschaftliche Zeit- 
schrift, I. Jahrgang, pp. 315-327. 
1892a. Hopkins, A. D. — Notes on a destructive forest tree scolytid.<\Science, XX, 
pp. 64-65, July 29. 
18926. Hopkins, A. D.— Proc. Ent. Soc. Wash., II, p. 353, October 6. 
1892. Schaufuss, C. F— Barkbeetle destroyer.<Can. Ent., XXIV, No. 12, p. 316. 
1893a. Hopkins, A. D. — Damage to forests by the destructive pine barkbeetle. <Ins. 
Life, V, No. 3, pp. 187-189, January. 
18936. Hopkins, A. D. — Catalogue of West Virginia Scolytidse and their enemies. < 
Bui. 31, W. Va. Agr. Exp. Sta., p. 76, April. 
1893c. Hopkins, A. D. — Catalogue of the West Virginia forest and shade tree insects. < 
Bui. 32, W. Va. Agr. Exp. Sta., pp. 174, 186, 188, 203, 213, 219, 225, 226, May. 
1893a 7 . Hopkins, A. D. — Destructive scolytids and their imported enemy. <Ins. 
Life, VI, No. 2, pp. 123-129, December. 
1894. Lintner, J. A.— Gardening, II, p. 292, May 15. 
1894a. Hopkins, A. D. — Destructive scolytids and their imported enemy. <24th Ann. 
Rep. Ent. Soc. Ontario, pp. 71-76. 
1894c. Hopkins, A. D. — The relations of insects and birds to present forest condi- 
tions.<Garden and Forest, VII, p. 348. 
1896. Hopkins, A. D. — Some notes on insect enemies of trees. <Can. Ent., XXVIII, 
No. 10, pp. 246, 250, October. 
1897. Menegaux, A., et Cochon, J. — Sur la biologie de l'Hylesine brillant.<C. R. 
Acad. Sci. Paris, Tome 124, No. 4, pp. 206-209 (Abstr. Journ. R. Micr. Soc. 
Lond., pt. 2, p. 120). 
1897a. Hopkins, A. D. — Report of Entomologist. <6th Ann. Rep. W. Va. Agr. Exp. 
Sta. for the fiscal year ending June 30, 1893, pp. 29-41. 
18976. Hopkins, A. D.— Report of Entomologist.<7th Ann. Rep. W. Va. Agr. Exp. 
Sta. for the fiscal year ending June 30, 1894, pp. 35-36. 
