THE GENUS DENDROCTONUS. 161 



1883. Le Conte and Horn. — Classification of the Coleopteraof North America, p. 523. 



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. — Comparaisons des organes du vol dans la serie animale.<Ann. Sci. 



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

 1887. Fletcher, J. — The spruce barkbeetle {D. rufpennis). 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, \J. S. Ent. 



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



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



1888. Judeich, J. T., und Nitsche, H. — Lehrbuch der niitteleuropaischen Forst- 



insektenkunde, pp. 458-462. 



1889. KoLBE, H. J. — Einfiihrung in die Kenntnis der Insekten. 



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, 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 the species of Dendroctonus of Boreal America. <Trans. 



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



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. — Uber 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. 

 1892b. 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. 



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



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

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



<Insect Life, V, No. 3, pp. 187-189, January. 

 1893b. Hopkins, A. D. — Catalogue of West Virginia Scolytidse 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. 

 1893cl. Hopkins, A. D. — Destructive scolytids and their imported enemy. <Insect 



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 Scolytid8e.<Can. Ent., XXVI, pp. 274- 



280. 

 1894c Hopkins, A. D. — The relations of insects and bii'ds to present foi'est 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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