OF PIERIS RAPAE IN NORTH AMERICA. (J9 



11. Walton, Alice B. The new cabbage butterfly. Read before the Muscatine Acad- 



emy of Science, Xov. 3, 1879. 1 ]). 4" ii. \>., n. d. 



12. HoFPMEiSTER, A. W. Re])ort on noxious insects. Tnuis. Iowa Hort. Soc, xiv, 



S2. 8" Muscatine, 1879. 



13. Witter, F. M. I^otes on Pieris rapae Schrank. Proc. Muse. Acad. Sc, April 



5, 1880. 2 pp. n. j)., n. d. 



14. Walton, Alice B. Tlie cal)bage enemy and remedies. Trans. Iowa Hort. Soc, 



XIV, 23-24. 8" Muscatine, n. d. 



15. Thomas, C. Cabbage insects. 0th Beji. St. Ent. Ill, 7-.56. 8° Springfield, 1880. 



16. Dodge, G. M. The cabbage butterfly, Piei-is rapae, in Xel)raska. Rep. Eat. Soc. 



Out. 1882, 30-31. 8" Toronto, 1883. 



17. Forbes, S. A. Expeiiments with the European cabbage worm. 12tli Rep. St. Ent. 



Ill, 92-97. 8" Springfield, 1883. 



18. Riley, C. V. Cabbage worms. Ana. R-p. U. S. Comm . Agric, 1883, 107-138. 



8° Washington, 1883. 



MEMOIRS BOSTON ROC. NAT. HIST., VOL. IV. 10 



