PRELIMINARY CLASSIFICATION OF SCOLYTOIDEA. 231 



1876. LiNDEMANN, C. — Monogxaphie der Borkenkafer Russlands. Die crypha- 

 loiden Tomiciden. BuL Soc. Imp. Nat. Moscou, Tom. 51, No. 4, pp. 

 320-380, figs. 6-55. 



1878. EiCHHOPF, W. — Ueber die Borkenkafer-Gattungen Hyhirgus Latr. und Blasto- 



phagus Eich. Stettin Ent. Ztg., Jakrg. 39, pp. 399-400. 



1879. EiCHHOFF, W. — Ratio, descrij^tio, emendatio eorum Tomicinorum, p. 165. 



1880. RuPERTSBERGER, M. — Biologie der Kafer Europas, Scolytidee, pp. 224-232. 



1881. EiCHHOFF, W. J. — Die eiiropaisclien Borkenkafer, pp. 315, figs. 104. 



1884. , Fauvel, a. — Sur I'identite des genres Hypothenemus, Stephanoderes et 



Homoeocryphalus. Revue d'entomologie, Tom. 3, p. 315. 

 1886. Thomson, C. G. — [Note on Polygraplius grandiclava Thorns.] BuL Soc. 



Ent. France, p. LXII. 

 1888. ' Bedel, L. — Faune des coleopteres du Bassinde la Seine, Tom. VI, pp. 385-421. 

 1894. Hopkins, A. D. — Sexual chai'acters in Scolytidae. Canad. Ent., Vol. 26, 



pp. 274-280, October. 

 1894. Reitter, E. — Bestimmungs-tabelle der Borkenkafer (Scolytidae) aus Europa 



und den angrenzenden Landern, Hft. 31, pp. 40-97. 



1894. RuPERTSBERGER, M. — Die biologische Literatur iiber die Kafer Europas von 



1880 an, mit Nachtragen aus fruherer Zeit und einem Larven-Cataloge, pp. 

 236-243. 

 1895-1905. Blandford, W. F. H. — Scolytidae. Biologia Centrali- Americana. 

 Insecta. Coleoptera, Vol. 4, Pt. 6, pp. 81-298, Pis. IV-IX. 



1895. JuDEiCH, J. F., & NiTSCHE, H. — Lehrbuch der mitteleuropiiischen Forstin- 



sektenkunde. Vol. I, pp. 435-556, figs. 142-178. 



1896. Verhoefp, G. — Ueber das Abdomen der Scolytiden, ein Beitrag zur verglei- 



chenden Morphologie des Hinterleibes der' Coleoptereu. Archiv ftir 

 Natm-geschichte, Jahrg. 62, Bd. I, pp. 109-144, figs. A-D. 



1897. Hubbard, H. G. — The ambrosia beetles of the United States. BuL 7, n. s., 



Div. Ent., U. S. Dept. Agr., pp. 9-30, figs. 1-34. 



1898. Hopkins, A. D. — On the history and habits of the "wood engraver" ambrosia 



beetle — Xyleborus xylographus (Say), Xyleborus saxeseni (Ratz.) — with 

 brief descriptions of different stages. Canad. Ent., Vol. 30, pp. 21-29, Pis. 

 2-3, January. 



1899. Hopkins, A. D. — Report on investigations to determine the cause of unhealthy. 



conditions of the spruce and pine from 1880-1883. BuL 56, W. Va. Agr. Exp. 

 Sta., pp. 197-461, figs. XCIX, April. 



1901. Barbey, Auguste. — Les scolytides de I'Europe centrale. pp. 121, Pis. 18. 



1902. Sedlaczek, W. — Ueber den Darmcanal der Scolytiden. Centralblatt fiir das 



gesamte Forstwesen, Jahrg. 28, Hft. 6, pp. 241-263, fold. PL, Juni. 



1903. Ganglbauer, L. — Systematisch-koleopterologische Studien. Miinchener 



koleopterologische Zeitschrift, Vol. I, pp. 271-319. 



1905. Hopkins, A. D. — Notes on scolytid larvae and their mouth parts. Proc. Ent. 



Soc. Wash., Vol. 7, No. 2-3, pp. 143-149, Pis. 4-5, October. 



1906. Heyden, L. von, Reitter, E., & Weise, J. — Catalogus Coleopterorum 



Europae, Caucasi et Armeniae rossicse. Ed. 2, column 707-714. 



1907. Tredl, R. — Nahrungspflanzen und Verbreitungsgebiete der Borkenkafer 



Europas. Entomologische Blatter, Bd. 3, pp. 2-4, 18-22, 37-42, 53-56, 69- 

 72, 87. 



1908. Formanek, Roman. — Eine neue Borkenkafer-gattung. Entomologische Blat- 



ter, Jahrg. 4, p. 91, May 15. 

 T.909. Hopkins, A. D. — Contributions toward a monograph of the scolytid beetles. 

 I. The genus Dendroctonus. Tech. Ser. No. 17, Pt. I, Bur. Ent., U. S. Dept. 

 Agr., pp. 1-164, figs. 1-95, Pis. I- VIII, June 30. 



