CATALOGUE OF THE EXHIBIT OF ECONOMIC ENTOMOLOGY 

 AT THE WORLD'S COLUMBIAN EXPOSITION. 



SECTION i -INSECTS INJURIOUS TO AGRICULTURE. 

 INSECTS AFFECTING THE APPLE. 



(Pyrus mahi8.) 



Injuring the Roots. 



1. APPLE-ROOT PLANT-LOUSE. 



Schizoneura lanigera Hausm. 



Remedies: Kerosene emulsion under and above ground; scalding 

 water poured freely about roots; bisulphide of carbon. 



Chief Articles: Walsh, 1st Sept. Ins. 111., pp. 55-63; Riley, 1st 

 Kept. Ins. Mo., pp. 118-123; Coinstock, Kept. Dept. Agric, 1871), pp. 

 258-259. 



Injuring the Trunk. 



2. APPLE BARK-BEETLE: PIN-BORER. 

 Monarihrum mail Fitch. 



Remedies: Kerosene emulsion applied to the trunk to prevent ovi- 

 position; trap trees. 



Chief Articles: Fitch, 3rd. N". Y. Rept.^p. 8; Saunders, Ins. Inj. 

 to Fruits, p. 24. 



3. PEAR-BLIGHT BEETLE : SHOT-BORER. 



Xylebonu dispar Fab. 

 Syn. Xyleboras pyri Peck. 



Remedies : Same as for No. 2. 



Chief Articles: Harris, Ins. Inj. to Veg., pp. 00-91 ; Saunders, ln>. 

 Inj. to Fruit, pp. 143-114; Insect Life, vol. n, pp. 279-280. 



4. ROUND-HEADED APPLE-TREE BORER. 



Saperda Candida Fab. 



Preventives: Alkaline washes; soap; washing soda: mixture o\' 

 white-wash and Paris green. 



Chief Articles: Harris, Ins. Inj. to Veg., pp. 107-109: Riley, 1st 

 Rept. Ins. Mo., pp. 42-40. 



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