36 THE RED SPIDEE ON HOPS IN CALIFORNIA. 
4. Harvey, F. L.— Ann. Rept. Maine Agr. Exp. Sta. for 1892, pp. 133-134, 1893. 
Tetranychus bimaculatus n. sp.; describes a new species distinct from the red spider of Europe. 
5. Davis, G. C.— Bul. 102, Mich. Agr. Exp. Sta., p. 51, 1893. 
Notes on injury to celery. 
6. Perkins, C. H.— 10th Ann. Rept. Vt. Agr. Exp. Sta., pp. 75-86, figs. 1-4, 1897. 
An account of the life history and habits of the red spider. 
7. Morgan, H. A.— Bui. 48, La. Agr. Exp. Sta., pp. 130-135, 1897. 
Notes on the life history and habits of the cotton red spider, with means of control. 
8. Hillman, F — Bul. 36, Nevada Agr. Exp. Sta., p. 39, 1897. 
9. Goff, E. S.— Bul. 63, Wis. Agr. Exp. Sta., p. 16, 1897. 
Brief notes on the red spider. 
10. Galloway, B. T.— Commercial Violet Culture, pp. 190-198, 1899. 
11. Banks, Nathan.— Tech. Ser. 8, Bur. Ent., U. S. Dept. Agr., pp. 73-74, figs. 10-11, 
1900. 
List of hosts and distribution of Tetranychus bimaculatus. 
12. Banks, Nathan.— Tech. Ser. 8, Bur. Ent., U. S. Dept. Agr., pp. 76-77, fig. 15, 
1900. 
Tetranychus gloveri n. sp.; described as cotton red spider. 
13. Chittenden, F. H. — Bul. 27, n. s., Bur. Ent., U. S. Dept. Agr., pp. 35-42. figs. 
9-11, 1901. 
Account of injury by Tetranychus bimaculatus to roses in greenhouses, etc. 
14. Titus, E. S. G.— Cir. 65, Bur. Ent,, U. S. Dept. Agr., 1905. 
The cotton red spider ( Tetranychus gloveri Banks). 
15. Gahan, A. B.— Bul. 119, Md. Agr. Exp. Sta., pp. 20-21, 1907. 
Tetranychus bimaculatus. A biologic account. 
16. Russell, H. M— Journ. Econ. Ent,, vol. 1, pp. 377-380, December, 1908. 
An account of experiments in the control of Tetranychus bimaculatus on snap beans in Florida. 
17. Swaine, J. M. — 1st Ann. Rept. Quebec Soc. for Protection of Plants from 
Insects and Diseases, pp. 18-19, 1909. 
An account of experiments with insecticides for Tetranychus bimaculatus. 
18. Weldon, G. P.— Bul. 152, Colo. Agr. Exp. Sta., pp. 9-12, 1909. 
Tetranychus bimaculatus. Description and treatment. 
19. Chittenden, F. H— Cir. 104, Bur. Ent., U. S. Dept. Agr., 1909. 
The common red spider. A full account of the work of this mite in greenhouses, with measures 
for its control. 
20. Weldon, George P.— Bul. 152, Colo. Agr. Exp. Sta., pp. 9-12, pi. 1, fig. 2, Octo- 
ber, 1909. 
Tetranychus bimaculatus here treated as pest to fruit trees, with an account of its habits and 
the experiments made to control it. 
21. Davis, J. J.— Journ. Econ. Ent., vol. 3, p. 186, April, 1910. 
Account of injury to elm by Tetranychus bimaculatus. 
22. Slingerland, M. V., Herrick, G. W., and Crosby, C. P. — Bul. 283, N. Y. (Cor- 
nell) Agr. Exp. Sta., p. 473, 1910. 
Tetranychus bimaculatus. Brief account of remedies for greenhouses. 
23. Parrott, P. J., and Schoene, W. J.— Bul. 330, N. Y. (Geneva) Agr. Exp. Sta., 
p. 474, 1910. 
24. Weldon, George P.— Bul. 169, Colo. Agr. Exp. Sta., pp. 12-13, November, 1910. 
Tetranychus bimaculatus; a brief account of injury to peach trees and measures of control. 
25. Worsham, E. L.— Bul. 92, Ga. Agr. Exp. Sta., pp. 135-141, pis. 1-5, 1911. 
The cotton red spider, Tetranychus telarius. Extended account with 5 colored plates. 
26. Ewing, H. E— Ent. News, vol. 23, pp. 145-148, pi. 10, April, 1912. 
Tetranychus telarius; notes on the molting process of our common red spider. 
27. McGregor, E. A— Cir. 150, Bur. Ent., TJ. S. Dept, Agr., Apr. 25, 1912. 
The common red spider ( Tetranychus bimaculatus). An extended account, with remedies, deal- 
ing with this insect as infesting cotton in South Carolina. 
