88 



Bulletin No. 21.— Report of a Trip to Australia, made under the 

 Direction of the Entomologist, to Investigate the Natural Enemies 

 of the Fluted Scale. By Albert Koebele. (1890.) [pp. 33.] 



Bulletin No. 22.— Eeports of Observations and Experiments in the 

 Practical Work of the Division. (1890.) [pp. 110.] 



Bulletin No. 23.— Eeports of Observations and Experiments in the 

 Practical Work of the Division. (1891.) [pp. 83.] 



Bulletin No. 24.— The Boll Worm of Cotton. A report of progress 

 in a supplementary investigation of this insect. By F. W. Mally. 

 (1891.) [pp. 50.] 



Bulletin No. 25. — Destructive Locusts. A popular consideration of 

 a few of the more injurious locusts (or ••grasshoppers") of the 

 United States, together Tdth the best means of destroying them. 

 By C. V. Riley. (1891.) [pp. 62, plates 12.] 



Bulletin No. 26. — ^Reports of Observations and Experiments in the 

 Practical Work of the Division. (1892.) [pp. 95.] 



Bulletin No. 27. — Reports on the Damage by Destructive Locusts 

 during the Season of 1891. (1892.) [pp. 64.] 



Bulletin No. 28. — ^The More Destructive Locusts of America, 

 North of Mexico. By Lawrence Bruner. (1893.) [pp. 40.] 



Bulletin No. 29.— Report on the Boll Worm of Cotton. By F. W. 

 MaUy. (1893.) [pp. 73.] 



Bulletin No. 30. — Reports of Observations and Experiments in the 

 Practical Work of the Division. (1893.) [pp. 67.] 



Bulletin No. 31. — Catalogue of the Exhibit of Economic Entomol- 

 ogy at the World's Columbian Exposition. (1893.) [pp. 121.] 



Bulletin No. 32.^ — Reports of Observations and Experiments in the 

 Practical Work of the Division. (1894.) [pp. 59.] 



Bulletin No. 33. — Legislation against Injurious Insects; a compila- 

 tion of the laws and regulations in the United States and British 

 Colmnbia. By L. O. Howard. (1893.) [pp. 46.] 



Bulletin No. 1, new series. — ^The Honey Bee: A manual of in- 

 struction in Apiculture. By Frank Benton. (1896.) [pp. 118, 

 pis. 11.] 



Bulletin No. 2, new series. — ^Proceedings of the Seventh Annual 

 Meeting of the Association of Economic Entomologists. (1895.) 

 [pp. 100.] 



Bulletin No. 3, new series.— The San Jose Scale: Its occun-ence in 

 the United States with a full account of its life history and the 

 remedies to be used against it. By L. O. Howard and C. L, 

 Marlatt. (1896.) [pp. 80, plate 1.] 



