87 



Bulletin No. 7.— The Pediculiand MallophagaaflfectingManandthe 

 Lower Animals. By Herbert Osborn. (1890.) [pp. 56, figs. 12.] 



Bulletin No. 8. — The Periodical Cicada. An Account of Cicada sej)- 

 tendecim and its tredecim Race, with a Chronology of all of the 

 broods known. By Charles V. Riley, Ph. D. (1885.) [pp. 46, 

 figs. 8.] 



Bulletin No. 9. — The Mulberry Silk-worm; being a Manual of In- 

 structions in Silk Culture. By Charles V. Riley, M. A., Ph. D. 

 (1886.) [pp. 65, figs. 29, plates 2.] 



Bulletin No. 10. — Our Shade Trees and their Insect Defoliators. 

 Being a Consideration of the four most injurious Species which 

 affect the Ti-ees of the Capital; with Means of destroying them. 

 By Charles V. Riley, Entomologist. (1887.) [pp. 75, figs. 27.] 



Bulletin No. 11. — Reports of Experiments with various Insecticide 

 Substances, chiefly upon insects affecting garden crops, made under 

 the Direction of the Entomologist. (1886.) [pp. Si.] 



Bulletin No. 12. — Miscellaneous Notes on the work of the Division 

 of Entomology for the Season of 1885; prepared by the Entomol- 

 ogist. (1886.) [pp. 45, pi. 1.] 



Bulletin No. 13. — Reports of Observations and Experiments in the 

 practical Work of the Division, made under the Direction of the 

 Entomologist. (With illustrations.) (1887.) [pp. 78, figs. 4.] 



Bulletin No. 14. — Reports of Observations and Experiments in the 

 practical Work of the Division, made under the Direction of the 

 Entomologist. (1887.) [pp. 62, figs. 2, pi. 1.] 



Bulletin No. 15. — The Icerya, or Fluted Scale, otherwise known as 

 the Cottony Cushion Scale. (Reprint of some recent Articles by 

 the Entomologist and of a Report from the Agricultural Experi- 

 ment Station, University of California.) (1887.) [pp. 40.] 



Bulletin No. 16. — The Entomological Writings of Dr. Alpheus 

 Spring Packard. By Samuel Henshaw. (1887.) [pp. 49.] 



Bulletin No. 17. — The Chinch Bug. A general Summary of its His- 

 tory, Habits, Enemies, and of the Remedies and Preventives to 

 be used against it. By L. O. Howard, M. S., Assistant Entomolo- 

 gist. (1888.) [pp. 48, figs. lO.J 



Bulletin No. 18. — The Life and Entomological Work of the late 

 Townend Glover. By C. R. Dodge. (1888.) [pp. 68.] 



Bulletin No. 19. — An Enumeration of the Published Synopses, Cata- 

 logues, and Lists of North American Insects. By. E. A. Schwarz. 

 (1888.) [pp. 77.] 



Bulletin No. 20. — The Root-knot Disease of the Peach, Orange, and 

 other plants in Florida, due to the work of Anguillula. By J. C. 

 Neal. (1889.) [pp. 31, pis. 21.] 



