THE GENUS DENDROCTONUS. 161 



1883. LE CONTE and HORN. Classification of the Coleoptera of North America, p. :>2:!. 



1884. HARRINGTON, W. HAGUE. Canadian Entomologist, XIV, p. 218. 



1885. LINTNER, J. A. Second report on the injurious and other insects of the State 



of New York, p. 54. 

 1885. AMANS. Companions <k-s orgaia-s du vol dans la srrie aiumale.<Ann. Sci. 



Nat., Ser. 6, Zool., XIX, pp. 9-222, Pis. I-VIII. 

 1887. FLETCHER, J. The spruce barkbeetle (D. rufipennis) . Appendix to the report 



of the Minister of Agriculture. Report of the Entomologist and Boumist, 



pp. 39, 40. 



1887. PACKARD, A. S. Insects injurious to forest and shade trees. <Bul. 7, V. S. Km . 



Comm., pp. 175, 176, 177, 243. 



1888. SCHWARZ, E. A. Proc. Ent. Soc. Wash., I, p. 175, November 1. 



1889. JUDEICH, J. T., u nd NITSCHE, II. Lehrbuch der mitteleuropiiischen Forst- 



insektenkunde, pp. 458-462. 



1889. KOLBE, H. J. Einftihrung in die Kenntnis der Insekten. 



1890. PACKARD, ALPHEUS S. Insects injurious to forest and shade trees. Revision 



and enlarged edition of Bui. 7.<5fh Rep. U. S. Ent. Comm., U. S. Dept. Agr., 

 / pp. 721, 722, etc. 



1890. HARRINGTON, W. HAGUE. On the lists of Coleoptera published by the Geolog- 

 ical Survey of Canada, 1842-1888. <Can. Ent., XXII, No. 9, p. 189 (author's 

 extra, p. 19). 



1890. DIETZ, W. G. Notes on thespeciesof Dendroctonus of Boreal America. <Trans. 



Amer. Ent. Soc., XVII, pp. 27-32. 



1891. HARRINGTON, \V. HAGUE. General notes.<Can. Ent., XXIII, No. 2, p. 27. 



Ibid., Science, XX, pp. 256-257, November 4, 1892. 



1892. PAULY, A. t'ber die Brutpflege und jahrliche Geschlechterzahl des Riesen- 

 , bastkiifers, Hylesinus micans Ratz.<Forstlich-naturwissenschaftliche Zeit- 



schrift, I. Jahrgang, pp. 315-327. 

 1892a. HOPKINS, A. D. Notes on a destructive forest tree scolytid . <JScience, XX, 



pp. 64-65, July 29. 

 1892b. HOPKINS, A. D. Proc. Ent. Soc. Wash., II, p. 353, October 6. 



1892. SCHAUFUSS, C. F. Barkbeetle destroy er.<Can. Ent., XXIV, No. 12, p. 316. 



1893. COCKERELL, T. D. A. The entomology of the Mid-Alpine Zone of Custer 



County, Colorado. <Trans. Amer. Ent. Soc., XX, p. 336. 

 1893a. HOPKINS, .A. D. Damage to forests by the destructive pine barkbeetle. 



<Ihsect Liu-. V, No. 3, pp. 187-189, January. 

 1893b. HOPKINS, A. D. Catalogue of West Virginia Scolytidee and their enemies. 



,<Bul. 31. W. Va. Agr. Exp. Sta., No. 76 [=p. 143], April. 

 1893c. HOPKINS, A. D. Catalogue of the West Virginia forest and shade tree insects. 



<Bul. 32, W. Va. Agr. Exp. Sta., May. 

 1893d. HOPKINS, A. D. Destructive scolytids and their imported enemy. <CInsect 



Life, VI, No. 2, pp. 123-129, December. 



1894. LINTNER, J. A. Gardening, II, p. 292, May 15. 



1894. HAMILTON, JOHN. Catalogue of the Coleoptera of Alaska, with the synonymy 



and distribution. <Trans. Amer. Ent. Soc., XXI, p. 35. 

 1894a. HOPKINS, A. D. Destructive scolytids and their imported enemy. <24th Ann. 



Rep. Ent. Soc. Ontario, pp. 71-76. 

 1894b. HOPKINS, A. D. Sexual characters in Scolytidse.<Can. Ent., XXVI, pp. 274- 



280. 

 1894c. HOPKINS, A. D. The relations of insects and birds to present forest conditions. 



<Garden and Forest, VII, p. 348. 



1895. HAMILTON, JOHN. Catalogue of the Coleoptera of southwestern Pennsylvania, 



with notes and descriptions. <Trans. Amer. Ent. Soc., XXII, pp. 346, 378, 

 October. 

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