BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 121 
1815a. Oestlund, O. W. Report of the entomologist. <Ann. Kept. 
Minn. State Hortic. Soc., 1890, pp. 161-1G4. 
Note on species of Pemphigus. 
1815b. O(liyer), G. W. Cyanide of potassium as an insecticide in 
glass houses. < Garden and Forest, 189G, p. 167. 
Experiments in killing Orthezia insignis. 
1816. Orcutt, I. II. Department of entomology. <Bull. No. 4, 
S. Dak. Agric. Exp. Sta., July, 1888, pp. 15-16. 
Requests information and specimens from farmers. 
1817. Orcutt, I. H. Department of entomology. <Bull. No. 13, 
S. Dak. Agric. Exp. Sta., April, 1889, pp. 28, tigs. 22. 
Treats of many common insects. 
1818. Orcutt, I. H., and Aldrich, J. M. Department of entomology. 
<Bull. No. 18, S. Dak. Agric. Exp. Sta., March, 1890, pp. 31-36, 
tigs. 2. 
Treats mostly ‘of cutworms. 
1819. Orcutt, I. H., and Aldrich, J. M. Department of entomology. 
<Bull. No. 22, S. Dak. Agric. Exp. Sta., March, 1891, pp. 
79-118, figs. 32. 
Notes on common insects, mostly previously treated by them. 
1820. Orcutt, I. H., and Aldrich, J. M. Department of entomology. 
<Bull. No. 30, S. Dak. Agric. Exp. Sta., March, 1892, pp. 20, 
figs. 2. 
Parasites of Cimbcx americana, insecticides, notes, etc. 
1821. Ormerod, E. A. [The new fiour moth in England.] <Insect 
Life, v. 1, April, 1889, pp. 314-315. 
Note on Ephestia lcuelmiella. 
1822. Ormerod, E. A. [Injury by Xyleborus dispar in England.] 
<Insect Life, v. 2, November, 1889, p. 145. 
1823. Ormerod, E. A. [The clover-seed midge in England, the use of 
Paris green, and other notes.] <Insect Life, v. 3, March, 1891, 
p. 293. 
1824. Ormerod, E. A. Notes of the season. <Insect Life, v. 4, Octo¬ 
ber, 1891, pp. 36-40. 
Notes on use of Paris green on Hypoderma bovis, and a few other species. 
1825. Orpet, E. O. The onion maggot. <Garden and Forest, 1894, 
pp. 187-188. 
1826. Orpet, E. O. Insect pests. <Garden and Forest, 1895, p. 187. 
1827. Osborn, H. The banded hickory borer. <Gardeu and Forest, 
1888, pp. 148-149, 3 figs. 
Treats of Chion ductus. 
1828. Osborn, H. The turf web-worm. <Prairie Farmer, 20 October, 
1888, p. 682. 
1829. Osborn, H. The food habits of the Thripidae. <Insect Life, v. 
1, November, 1888, pp. 137-142. 
