CIRCULARS, SECOND SERIES. 19 
No. 83. The locust borer [Cyllene robiniw Forst.] and methods for its control. By 
A.D. Hopkins. pp. 8, figs. 4. Issued February 19, 1907. 
No. 84. The grasshopper problem and alfalfa culture. By F. M. Webster. pp. 10, 
figs.8. Issued April 6, 1907. 
No. 85. The spring grain-aphis (Tozxoptera graminum Rond.). By F. M. Webster. 
pp. 7, figs. 3. Issued March 29, 1907. (See also No. 93.) 
No. 86. The corn leaf-aphis [Aphis maidis Fitch] and corn root-aphis [Aphis maidi- 
radicis Forbes]. By F. M. Webster. pp. 13, figs. 4. Issued May 6, 1907. 
No. 87. The Colorado potato beetle (Leptinotarsa decemlineata Say). By F. H. Chit- 
tenden. pp. 15, figs.6. Issued June 3, 1907. 
No. 88. The terrapin scale (Hulecanium nigrofasciatum Pergande.). By J. G. Sanders. 
pp. 4, figs. 3. Issued May 14, 1907. 
No. 89. The periodical cicada in 1907 (Tibicen septendecim L., race tredecim Walsh- 
Riley). By C. L. Marlatt. pp. 4, figs. 3. Issued May 14, 1907. 
No. 90. The white-pine weevil [Pissodes strobi Peck]. By A. D. Hopkins. pp. 8, figs. 
6. Issued June 18, 1907. 
No. 91. Note on the occurrence of the North American fever tick [ Margaropus (Boophi- 
lus) annulatus Say] on sheep. By W. D. Hunter. pp. 3. Issued July 3, 1907. 
No. 92. Mites and lice on poultry. By Nathan Banks. pp. 88, figs. 6. Issued 
September 25, 1907. 
No. 93. The spring grain-aphis or so-called ‘‘green bug” ( Toxoptera graminum Rond.). 
By F. M. Webster. pp. 18, figs. 7. Issued August 22, 1907. Out of print. 
Same, revised. pp. 22, figs. 10. Issued June 23, 1909. 
No. 94. The cause of American foul brood [Bacillus larve]. By G. F. White. pp. 4. 
Issued July 29, 1907. ; 
No. 95. (Revision of Circular No.56.) The most important step in the control of the 
boll weevil [Anthonomus grandis Boh.]. By W. D. Hunter. pp. 8. Issued October 
3, 1907. Out of print. 
Same, revised edition. pp. 8. Issued September 21, 1908. 
Same, French edition. pp. 11. Issued January 21, 1909. 
No. 96. The catalpa sphinx (Ceratomia catalpx Bdv.). By L. O. Howard and F. H. 
Chittenden. pp. 7, figs. 2. Issued December 16, 1907. 
No. 97. The bagworm (Thyridopteryx ephmerxformis Haw.). By L. O. Howard and 
F. H. Chittenden. pp. 10, figs. 11. Issued February 6, 1908. , 
No. 98. The apple-tree tent caterpillar (Malacosoma americana Fab.). By A. L. 
Quaintance. pp. 8, figs. 4. Issued January 28, 1908. 
No. 99. The nut weevils.2 By F. H. Chittenden. pp. 15, figs. 14. Issued March 6, 
1908. 
No. 100. (In preparation.) 
No. 101. The apple maggot or ‘‘railroad worm” (Rhagoletis | Trypeta] pomonella Walsh). 
By A. L. Quaintance. pp. 12, figs. 2. Issued May 4, 1908. 
No. 102. The asparagus beetles. By F. H. Chittenden. pp. 12, figs. 7. Issued 
May 20, 1908. 
No. 103. The harlequin cabbage bug ( Murgantia histrionica Hahn). By F. H. Chit- 
tenden. pp. 10, fig. 1. Issued June 20, 1908. 
No. 104. The common red spider ( Tetranychus bimaculatus Harvey). By F. H. Chit- 
tenden. pp. 11, figs. 4. Issued January 26, 1909. 
No. 105. The rose slugs. By F. H. Chittenden. pp. 12, figs. 5. Issued October 5, 
1908. 
No. 106. The wheat strawworm (Jsosoma grande Riley). By F.M. Webster. pp. 15, 
figs. 13. Issued May 13, 1909. 
@ Reprinted from Yearbook of the Department of Agriculture for 1904. pp. 299-310, 
pls. XX VITI-XXX, figs. 17-26. 
[Cir. 76] 
