164 THE SCOLYTID BEETLES. 



1903. Brichet, O., et Severin, G. — Le Dendroctonus micans, degats moyens piv- 

 ventifs et destructifs. <Bull. Soc. Centr. Foresliere Belg., X, pp. 244-258. 



1903. Baudisch, Fr. — Uber Dendroctonus micans Kug. r'Centralbl. ges. ForstAvesen, 



Jahrg. 29, pp. 151-152. 



1904. Hopkins, A. D. — Catalogue of exhibit of insect enemies of forests and forest 



products at the Louisiana Purchase Exposition, St. Louis, Mo., 1904.<^Bul. 

 48, Div. Ent., U. S. Dept. Agr. 

 1904-5. QuAiRiERE, C. — Le Dendroctonus micans. 'Bull. Soc. Centr. Forestiere 

 Belg., XI, pp. 626-628; XII, pp. 183-186. 



1904. Powell, P. B. — The development of wings of certain beetles, and some 



studies of the origin of the wings of insects. <Journ. N. Y. Ent. Soc, XII, 

 pp. 237-243, Pis. XI-XVII. 



1905. Ibid, (continued), XIII, pp. 5-22. 



1905. Hopkins, A. D.— The Black Hills beetle, with further notes on its distribu- 

 tion, life history, and methods of control. Bui. 56, Bur. Ent., LT. S. Dept. 

 Agr., pp. 1-24, Pis. I, II, figs. 1-6. 



1905. Quievy, Prosper. — Dendroctonus micans, invasion. Bui. Soc. Centr. F(jres- 

 tiere Belg., T. 12, pp. 334-335. 



1905. Felt, E. P. — Insects affecting park and woodland trees." N. Y. State AIus., 

 Mem. 8, Vol. 1, pp. 6-7. 



1905. NiJssLiN, 0. — Leitfaden der Forstinsektenkunde, pp. 175-178. 



1905. Voss, Friedrich. — Uber den Thorax von Gryllus domesticus, mit besonderer 



Beriicksichtigung des Fliigelgelenks und dessen Bewegung.<Zeitschr. f. 



wiss. Zool., LXXVIII, pp. 268-521, 654-759, Pis. XV, XVI, XXIV. 

 1906a. Hopkins, A. D. — Barkbeetle depredations of some fifty years ago in the Pikes 



Peak region of Colorado. <Proc. Ent. Soc. Wash., VIII,~Nos. 1-2, pp. 4-5, July 



13, 1906. 

 1906b. Hopkins, A. D. — Notes on scolytid larvse and their mouthparts.-cProc. Ent. 



Soc. Wash., VII, Nos. 2-3, pp. 143-149, Pis. IV, V, January 10. 

 1906c. Hopkins, A. D. — Notes on some Mexican Scolytidae, with descriptions of some 



new species. <Proc. Ent. Soc. Wash., VII, Nos. 2-3, pp. 71-81, January 10. 



1906. Webb, J. L. — Some insects injurious to forests. The western pine-destroying 



barkbeetle. <Bul. 58, Pt. II, Bur. Ent., U. S. Dept. Agr., pp. 17-30, Pis. II, 

 III, figs. 7-12, August 18. 



1906. Felt, E. P. — Insects affecting park and woodland trees. <N. Y. State ]\Ius., 



Mem. 8, Vol. 2. 



1907. Fall, H. C, and Cockerell, T. D. A. — The Coleoptera of New Mexico. 



<Trans. Amer. Ent. Soc, XXXIII, pp. 145, 218. 



1908. Severin, G. — Le genre Dendroctonus.<CBul\. Soc Centr. Forestiere Belg. 



Author's extra, pp. 1-20. Received May, 1908. 

 1908. Hopkins, A. D. — Notable depredations by forest insects. <Yearbook U. S. 

 Dept. Agr., for 1907, pp. 149-164. 



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