CIRCULARS, SECOND SERIES. 13 
No. 7. The pear-tree psylla (Psylla pyricola Foerst.). By C. L. Marlatt. pp. 8, 
figs. 6. May 1, 1895. 
No. 8. The imported elm leaf-beetle (Galerucella luteola Miill.; Galeruca xan- 
thomelena Sehrank). By C. L. Marlatt. pp. 4, fig. 1. May 23, 1895. Out 
of print. 
No. 9. Cankerworms [Paleacrita vernata Peck and Alsophila (Anisopteryx) 
pometaria Harr.]. By D. W. Coquillett. pp. 4, figs. 4. May 24, 1895. 
No. 10. The Harlequin cabbage bug, or calico back (Murgantia histrionica 
Hahn). By L. O. Howard. pp. 2, fig. 1. May 24, 1895. 
No. 11. The rose chafer [Macrodactylus subspinosus Fab.]. By F. H. Chitten- 
den. pp. 4, fig. 1. May 21, 1895. 
No 12. The Hessian fly (Cecidomyia destructor Say). By C. L. Marlatt. pp. 4. 
July 26, 1895. Out of print. ; 
Same, revised edition. pp. 4. April 13, 1900. Out of print. (Superseded by 
No. 70.) 
No. 13. Mosquitoes and fleas. By L. O. Howard. pp. 4. February 1, 1896. 
Same, revised edition. November 15, 1897. 
No. 14. (Revision of No. 6.) The Mexican cotton-boll weevil (Anthonomus 
grandis Boh.). By L. O. Howard. pp. 8, figs. 5. February 12, 1896. Out of 
print. 
Same. (Spanish edition.) pp. 8, figs 5. May 18, 1896. 
No. 15. General work against insects which defoliate shade trees in, cities and 
towns. By L. O. Howard. pp. 4. March 6, 1896. (In advance from an 
article entitled ‘‘ The shade-tree insect problem in the eastern United States,” 
to be published in the Yearbook of the Department for 1895.) 
No. 16. The larger corn stalk-borer (Diatrea saccharalis Fab.). By L. O. 
Howard. pp. 3, figs. 3. August 13, 1896. 
No. 17. The peach-tree borer (Sannina exitiosa Say). By C. L. Marlatt. pp. 4, 
fig. 1. September 30, 1896. Out of print. (Superseded by No. 54.) 
No. 18. (Revision of No. 14.) The Mexican cotton-boll weevil (Anthonomus 
grandis Boh.). By L. O. Howard, pp. 8, figs. 5. February 4, 1897. 
Same. (Spanish edition.) pp. 10. Out of print. 
Same. (German edition.) pp. 11. Out of print. 
No. 19. The clover mite (Bryobia pratensis Garman). By C. L. Marlatt. pp 
4, fig. 1. March 5, 1897. Out of print. . 
Same, second edition. pp. 4, fig. 1. July 19, 1897. 
No. 20. The woolly aphis of the apple (Schizoneura lanigera Hausm.). By 
C. lL. Marlatt. pp. 6, figs. 2. March 15, 1897. Out of print. 
No. 21. The strawberry weevil (Anthonomus signatus Say). By F. H. Chit- 
tenden. pp. 7, figs. 4. March 18, 1897. 
No. 22. The periodical cicada in 1897. By E. A. Schwarz. pp. 4. May 1, 1897. 
No. 23. The buffalo tree-hopper (Ceresa bubalus Fab.). By C. L. Marlatt. 
pp. 4, figs. 2. May 10, 1897. 
No. 24. The two-lined chestnut borer (Agrilus bilineatus Weber). By F. H. 
Chittenden. pp. 8, fig. 1. July 14, 1897. 
No. 25. The ox warble (Hypoderma lineata Villers). By C. L. Marlatt. pp. 
10, figs. 10. July 19, 1897. 
No. 26. The pear slug (Hriocampoides limacina Retzius). By C. L. Marlatt. 
pp. 7, figs. 4. August 28, 1897. 
No. 27. The Mexican cotton-boll weevil in 1897. By L. O. Howard. pp. 7. 
December 31, 1897. Out of print. 
No. 28. The box-elder plant-bug (Leptocoris trivittatus Say). By lL. O. 
Howard. pp. 3, fig. 1. January §, 1898. 
[Cir. 76] 
