
Croton Bugs Injurious to Office Papers

Croton Bugs Injurious to Office Papers

The San Jose Scale
Auspicious pernicious Comstock

The San Jose Scale
(Aspidiotus perniciosus Comstock.)

Social Insects and Evolution

Mr. Maxim's Flying Machine

The Periodical Cicada, Alias Seventeen-Year Locust

“Those Cocoons Resembling Pine Cones ?”

Parasitic and Predaceous Insects in Applied Entomology

The Phylloxera and American Resistant Stocks

On the Intentional Importation of Parasites and Natural Enemies of Insects Injurious to Vegetation

The Habits of Thalessa and Tremex

The Habits of Thalessa and Tremex
Habits of Thalessa

On the Causes of Variation in Organic Forms

On the Causes of Variation in Organic Forms

On the Causes of Variation in Organic Forms

Systematic Relations of Platypsyllus, as determined by the Larva

Some Important Discoveries in the Life- History of the Hop Plant Louse
(Phorodon humuli, Schrank)

Premature Appearance of the Periodical Cicada

Notes on the Periodical Cicada

General Truths in Applied Entomolggy

Dipterous Larvæ in the Human Body

Jumping Seeds and Galls

Emulsions of Petroleum as Insecticides

Successful Management of the Insects Most Destructive to the Orange