Sept. 23, 1918 
Pemphigus popidi-transversus 
593 
(9) Lintner, J. A. 
1898. REPORT OP THE STATE ENTOMOLOGIST. In 51st Ann, Rpt. N. Y. State 
Mus., 1897, v. i, p. 33 i- 39 °> 3 2 P*- 
(10) Hunter, W. D. 
1901. THE aphidida$ OP north America. Iowa Agr. Exp. Sta. Bui. 60, p. 
61-138. Bibliography, p. 64-69. 
(11) Bruner, Lawrence. 
1901, aphides, or plant LICE. In Nebr. Farmer, v. 29, no. 26, p. 651, 657, 
illns. 
(12) Sanborn, C. E. 
1904. Kansas aphididaS. In Kansas Univ. Sci. Bui., v. 3, no. 1, p. 3-82, 
pi. 1-22. 
(13) Felt, E. P. 
1905-6. INSECTS AFFECTING PARK AND WOODLAND TREES. N. Y. State MUS. 
Mem. 8, 2 v., 877 p., 223 fig., 70 pi. 
(14) Jackson, C. F. 
1908. A SYNOPSIS OF THE GENUS PEMPHIGUS WITH NOTES ON THEIR ECONOMIC 
IMPORTANCE, LIFE HISTORY, AND GEOGRAPHICAL DISTRIBUTION. In 
Ann. Rpt. Columbus Hort. Soc., v. 22, 1907, p. 160-218, 3 fig. 
(15) Gillette, C. P. 
1909. plant louse notes, family APHiDiDAj. In Jour. Econ. Ent., y. 2, 
no. 5, p. 351-357** pl- 12. 
(16) Davidson, W. M. 
1910. FURTHER NOTES ON THE APHIDIDAJ COLLECTED IN THE VICINITY OF 
Stanford university. In Jour. Econ. Ent., v. 3, no. 4, p. 372-381, 
fig. 28-29. 
(17) Davis, J. J. 
1910. A LIST OF THE APHIDIDjE OF ILLINOIS, WITH NOTES ON SOME OF THE 
species. In Jour. Econ. Ent., v. 3, no. 5, p. 407-420, pl. 27-28. 
(18) Williams, T. A. 
1910. the APHiDiDAt OF Nebraska. Univ. Studies [Univ. Nebr.], v. 10, 
no. 2, 91 p. 
(19) Davidson, W. M. 
1911. notes on some aphididaj taken in placer county. In Pomona 
Coll. Jour. Ent., v. 3, no. 1, p. 398-399. 
(20) Essig, E. O. 
1912. aphididaj of southern California, viii. In Pomona Coll. Jour. Ent,„ 
v. 4, no. 2, p. 698-745, fig. 223-239. 
(21) Baldwin, C. H. 
1912. FIFTH ANNUAL REPORT OF THE STATE ENTOMOLOGIST OF INDIANA, 1911- 
1912. 324 p., illus., 3 pl. (col.). Indianapolis. 
(22) Gillette, C. P., and Bragg, E. C. 
1915. NOTES ON SOME COLORADO APHIDS HAVING ALTERNATE FOOD HABITS. 
In Jour. Econ. Ent., v. 8, no. 1, p. 97-103. 
(23) Maxson, A. C. 
1916. SOME UNPUBLISHED NOTES ON PEMPHIGUS BETiE DOANE. In Jour* 
Econ. Ent., v. 9, no. 5, p. 500-504. 
